309 lines
16 KiB
JSON
309 lines
16 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-2026-73541",
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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": "2026-08-18T10:00:02.140Z",
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"datePublished": "2026-08-19T17:20:00.286Z",
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"dateUpdated": "2026-08-19T18:47:04.542Z"
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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.FeePayerPolicy'",
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"'Elixir.MPP.Methods.Tempo'"
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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/fee_payer_policy.ex",
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"lib/mpp/methods/tempo.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.MPP.Methods.Tempo.FeePayerPolicy':validate/3"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo':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": "0.12.0",
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"status": "affected",
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"version": "0.2.0",
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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.FeePayerPolicy'",
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"'Elixir.MPP.Methods.Tempo'"
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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/fee_payer_policy.ex",
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"lib/mpp/methods/tempo.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.MPP.Methods.Tempo.FeePayerPolicy':validate/3"
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},
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{
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"name": "'Elixir.MPP.Methods.Tempo':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": "ddc46868fba57ccebb567c04709812b466123076",
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"status": "affected",
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"version": "d29d54e507918db00a5b65d90136b73166c017d7",
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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 that enable Tempo server-side fee sponsorship are affected, through <code>\"fee_payer\" => true</code> in <code>method_config</code> with either local co-signing (<code>fee_payer_private_key</code>) or hosted sponsorship (<code>fee_payer_url</code>). Sponsorship is disabled by default.</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 that enable Tempo server-side fee sponsorship are affected, through `\"fee_payer\" => true` in `method_config` with either local co-signing (`fee_payer_private_key`) or hosted sponsorship (`fee_payer_url`). Sponsorship is disabled by default."
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}
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],
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"value": "Only deployments that enable Tempo server-side fee sponsorship are affected, through \"fee_payer\" => true in method_config with either local co-signing (fee_payer_private_key) or hosted sponsorship (fee_payer_url). Sponsorship is disabled by default."
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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": "0.12.0",
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"versionStartIncluding": "0.2.0",
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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": "analyst",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"datePublic": "2026-08-02T00:00:00.000Z",
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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>Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty.</p>\n<p><code>MPP.Methods.Tempo.FeePayerPolicy</code> enforces its ceilings (<code>max_gas</code>, <code>max_fee_per_gas</code>, <code>max_priority_fee_per_gas</code>, the worst-case <code>gas_limit * max_fee_per_gas <= max_total_fee</code> budget cap, and a validity window) against one transaction at a time, and nothing accounts for exposure across concurrent requests. <code>reserve_hash_atomic/2</code> is keyed on the transaction hash, so it prevents duplicate broadcast of the same signed transaction but not N distinct sponsored transactions carrying distinct expiring nonces. Committed sponsor exposure is therefore N times <code>max_total_fee</code>, bounded by nothing in the library, and the default 900 second validity window lets co-signed transactions stay broadcastable and uncounted for that entire period.</p>\n<p>This issue affects mpp: from 0.2.0 before 0.12.0.</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": "Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty.\n\n`MPP.Methods.Tempo.FeePayerPolicy` enforces its ceilings (`max_gas`, `max_fee_per_gas`, `max_priority_fee_per_gas`, the worst-case `gas_limit * max_fee_per_gas <= max_total_fee` budget cap, and a validity window) against one transaction at a time, and nothing accounts for exposure across concurrent requests. `reserve_hash_atomic/2` is keyed on the transaction hash, so it prevents duplicate broadcast of the same signed transaction but not N distinct sponsored transactions carrying distinct expiring nonces. Committed sponsor exposure is therefore N times `max_total_fee`, bounded by nothing in the library, and the default 900 second validity window lets co-signed transactions stay broadcastable and uncounted for that entire period.\n\nThis issue affects mpp: from 0.2.0 before 0.12.0."
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}
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],
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"value": "Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty.\n\nMPP.Methods.Tempo.FeePayerPolicy enforces its ceilings (max_gas, max_fee_per_gas, max_priority_fee_per_gas, the worst-case gas_limit * max_fee_per_gas <= max_total_fee budget cap, and a validity window) against one transaction at a time, and nothing accounts for exposure across concurrent requests. reserve_hash_atomic/2 is keyed on the transaction hash, so it prevents duplicate broadcast of the same signed transaction but not N distinct sponsored transactions carrying distinct expiring nonces. Committed sponsor exposure is therefore N times max_total_fee, bounded by nothing in the library, and the default 900 second validity window lets co-signed transactions stay broadcastable and uncounted for that entire period.\n\nThis issue affects mpp: from 0.2.0 before 0.12.0."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-130",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-130 Excessive Allocation"
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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": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "NETWORK",
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"baseScore": 8.3,
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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:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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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-770",
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"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
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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": "2026-08-19T17:20:00.286Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/ZenHive/mpp/security/advisories/GHSA-j4j7-7xpr-c7cr"
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},
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{
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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-2026-73541.html"
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},
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{
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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-2026-73541"
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},
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{
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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/ddc46868fba57ccebb567c04709812b466123076"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "Tempo fee sponsorship in mpp bounds each transaction but not aggregate exposure, allowing concurrent sponsor-wallet drain",
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"workarounds": [
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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>Disable Tempo fee sponsorship by setting <code>\"fee_payer\" => false</code> (the default), so the client pays its own gas and the sponsor wallet is never committed. Where sponsorship must stay enabled, lowering <code>max_total_fee</code> and <code>max_validity_window_seconds</code> reduces the exposure each concurrent request can commit and how long it stays outstanding, without bounding the aggregate.</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": "Disable Tempo fee sponsorship by setting `\"fee_payer\" => false` (the default), so the client pays its own gas and the sponsor wallet is never committed. Where sponsorship must stay enabled, lowering `max_total_fee` and `max_validity_window_seconds` reduces the exposure each concurrent request can commit and how long it stays outstanding, without bounding the aggregate."
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}
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],
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"value": "Disable Tempo fee sponsorship by setting \"fee_payer\" => false (the default), so the client pays its own gas and the sponsor wallet is never committed. Where sponsorship must stay enabled, lowering max_total_fee and max_validity_window_seconds reduces the exposure each concurrent request can commit and how long it stays outstanding, without bounding the aggregate."
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}
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]
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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": "2026-08-19T18:45:45.477502Z",
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"id": "CVE-2026-73541",
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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": "total"
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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": "2026-08-19T18:47:04.542Z"
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}
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}
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]
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}
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} |