326 lines
18 KiB
JSON
326 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-87119",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-09-11T18:00:02.032Z",
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"datePublished": "2026-09-22T11:16:56.232Z",
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"dateUpdated": "2026-09-22T12:02:31.484Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.MPP.Methods.Tempo.KeyAuthorization'",
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"'Elixir.MPP.Methods.Tempo.Subscription'"
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],
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"packageName": "mpp",
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"packageURL": "pkg:hex/mpp",
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"product": "mpp",
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"programFiles": [
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"lib/mpp/methods/tempo/key_authorization.ex",
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"lib/mpp/methods/tempo/subscription.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':verify/3"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':wallet_params/2"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':from_rpc/1"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.Subscription':verify/2"
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}
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],
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"repo": "https://github.com/ZenHive/mpp",
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"vendor": "ZenHive",
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"versions": [
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{
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"lessThan": "0.16.2",
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"status": "affected",
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"version": "0.14.0",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.MPP.Methods.Tempo.KeyAuthorization'",
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"'Elixir.MPP.Methods.Tempo.Subscription'"
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],
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"packageName": "zenhive/mpp",
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"packageURL": "pkg:github/zenhive/mpp",
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"product": "mpp",
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"programFiles": [
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"lib/mpp/methods/tempo/key_authorization.ex",
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"lib/mpp/methods/tempo/subscription.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':verify/3"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':wallet_params/2"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.KeyAuthorization':from_rpc/1"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo.Subscription':verify/2"
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}
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],
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"repo": "https://github.com/ZenHive/mpp",
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"vendor": "ZenHive",
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"versions": [
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{
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"lessThan": "4b6eaec02af0e8485cfb4ff68f467d075ed5dd6f",
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"status": "affected",
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"version": "db464dfa9a86ccda58f0827101f6da6bd8aafa78",
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"versionType": "git"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Only deployments offering Tempo subscriptions are affected, which requires <code>subscription_access_key_private_key</code> in the Tempo <code>method_config</code>. Exploitation further requires the attacker to have obtained a payer's signed activation credential, in transit over a hop that is not TLS-protected or at rest in a log, an intermediary, or a client retry buffer.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Only deployments offering Tempo subscriptions are affected, which requires `subscription_access_key_private_key` in the Tempo `method_config`. Exploitation further requires the attacker to have obtained a payer's signed activation credential, in transit over a hop that is not TLS-protected or at rest in a log, an intermediary, or a client retry buffer."
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}
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],
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"value": "Only deployments offering Tempo subscriptions are affected, which requires subscription_access_key_private_key in the Tempo method_config. Exploitation further requires the attacker to have obtained a payer's signed activation credential, in transit over a hop that is not TLS-protected or at rest in a log, an intermediary, or a client retry buffer."
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "0.16.2",
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"versionStartIncluding": "0.14.0",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "E.FU"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "E.FU"
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},
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{
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"lang": "en",
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"type": "coordinator",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"dateAssigned": "2026-09-15T15:20:31.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captured subscription activation credential to charge the payer repeatedly.</p>\n<p>The payer signs a Tempo <code>KeyAuthorization</code> over the chain id, key type, key id, expiry, limits and scopes only, with nothing tying it to the challenge that prompted it. <code>MPP.Methods.Tempo.KeyAuthorization.verify/3</code> in <code>lib/mpp/methods/tempo/key_authorization.ex</code> pins each of those signed fields against the subscription request, and the access key it pins is a static per-endpoint server key, so one signed authorization verifies against every challenge the server issues for the same subscription terms. <code>MPP.Methods.Tempo.Subscription.activate/4</code> deduplicates activations by challenge id, so presenting the captured credential under a fresh challenge produces a different dedup key, <code>claim_activation</code> succeeds, and the subscription transaction is built and broadcast again. Each replay charges the payer's wallet a new first-period settlement and re-authorizes the server key, bounded only by the subscription expiry and the chain's own semantics for re-installing an existing key.</p>\n<p>This issue affects mpp: from 0.14.0 before 0.16.2.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captured subscription activation credential to charge the payer repeatedly.\n\nThe payer signs a Tempo `KeyAuthorization` over the chain id, key type, key id, expiry, limits and scopes only, with nothing tying it to the challenge that prompted it. `MPP.Methods.Tempo.KeyAuthorization.verify/3` in `lib/mpp/methods/tempo/key_authorization.ex` pins each of those signed fields against the subscription request, and the access key it pins is a static per-endpoint server key, so one signed authorization verifies against every challenge the server issues for the same subscription terms. `MPP.Methods.Tempo.Subscription.activate/4` deduplicates activations by challenge id, so presenting the captured credential under a fresh challenge produces a different dedup key, `claim_activation` succeeds, and the subscription transaction is built and broadcast again. Each replay charges the payer's wallet a new first-period settlement and re-authorizes the server key, bounded only by the subscription expiry and the chain's own semantics for re-installing an existing key.\n\nThis issue affects mpp: from 0.14.0 before 0.16.2."
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}
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],
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"value": "Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captured subscription activation credential to charge the payer repeatedly.\n\nThe payer signs a Tempo KeyAuthorization over the chain id, key type, key id, expiry, limits and scopes only, with nothing tying it to the challenge that prompted it. MPP.Methods.Tempo.KeyAuthorization.verify/3 in lib/mpp/methods/tempo/key_authorization.ex pins each of those signed fields against the subscription request, and the access key it pins is a static per-endpoint server key, so one signed authorization verifies against every challenge the server issues for the same subscription terms. MPP.Methods.Tempo.Subscription.activate/4 deduplicates activations by challenge id, so presenting the captured credential under a fresh challenge produces a different dedup key, claim_activation succeeds, and the subscription transaction is built and broadcast again. Each replay charges the payer's wallet a new first-period settlement and re-authorizes the server key, bounded only by the subscription expiry and the chain's own semantics for re-installing an existing key.\n\nThis issue affects mpp: from 0.14.0 before 0.16.2."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-60",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>An attacker who obtains a payer's subscription activation credential (from a non-TLS hop, a log, a compromised intermediary, or the client's own retry buffer) can present it under fresh challenges to settle repeated first-period charges against that payer's wallet and re-authorize the server's access key. The payer bears the on-chain cost, limited only by the per-period subscription limit and the subscription expiry.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "An attacker who obtains a payer's subscription activation credential (from a non-TLS hop, a log, a compromised intermediary, or the client's own retry buffer) can present it under fresh challenges to settle repeated first-period charges against that payer's wallet and re-authorize the server's access key. The payer bears the on-chain cost, limited only by the per-period subscription limit and the subscription expiry."
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}
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],
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"value": "An attacker who obtains a payer's subscription activation credential (from a non-TLS hop, a log, a compromised intermediary, or the client's own retry buffer) can present it under fresh challenges to settle repeated first-period charges against that payer's wallet and re-authorize the server's access key. The payer bears the on-chain cost, limited only by the per-period subscription limit and the subscription expiry."
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "HIGH",
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"attackRequirements": "PRESENT",
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"attackVector": "NETWORK",
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"baseScore": 8.2,
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"baseSeverity": "HIGH",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "HIGH",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-294",
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"description": "CWE-294 Authentication Bypass by Capture-replay",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-09-22T11:16:56.232Z"
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},
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"references": [
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{
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"name": "GitHub Advisory",
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"tags": [
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"related",
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"vendor-advisory"
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],
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"url": "https://github.com/ZenHive/mpp/security/advisories/GHSA-p9fv-9w58-95x2"
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},
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{
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"name": "EEF CNA record for CVE-2026-87119",
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-87119.html"
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},
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{
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"name": "OSV record EEF-CVE-2026-87119",
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-87119"
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},
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{
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"name": "Introducing commit db464df in ZenHive/mpp",
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"tags": [
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"related"
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],
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"url": "https://github.com/ZenHive/mpp/commit/db464dfa9a86ccda58f0827101f6da6bd8aafa78"
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},
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{
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"name": "Fix commit 4b6eaec in ZenHive/mpp",
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"tags": [
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"patch"
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],
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"url": "https://github.com/ZenHive/mpp/commit/4b6eaec02af0e8485cfb4ff68f467d075ed5dd6f"
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}
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],
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"source": {
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"discovery": "INTERNAL"
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},
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"title": "mpp Tempo subscription key authorization is not bound to the issuing challenge, allowing a captured activation credential to be replayed"
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-22T12:02:12.184296Z",
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"id": "CVE-2026-87119",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-22T12:02:31.484Z"
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}
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}
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]
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}
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} |