159 lines
6.6 KiB
JSON
159 lines
6.6 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-2026-63115",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-07-15T16:54:55.816Z",
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"datePublished": "2026-10-30T21:33:55.894Z",
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"dateUpdated": "2026-11-02T18:09:53.602Z"
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},
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"containers": {
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"cna": {
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"title": "ActivityPub Undo handler can unfollow or remove reposts on behalf of other accounts",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-290",
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"lang": "en",
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"description": "CWE-290: Authentication Bypass by Spoofing",
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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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"descriptions": [
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{
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"cweId": "CWE-345",
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"lang": "en",
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"description": "CWE-345: Insufficient Verification of Data Authenticity",
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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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"descriptions": [
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{
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"cweId": "CWE-863",
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"lang": "en",
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"description": "CWE-863: Incorrect Authorization",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/TryGhost/ActivityPub/security/advisories/GHSA-mm4q-93gr-5mwc",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/TryGhost/ActivityPub/security/advisories/GHSA-mm4q-93gr-5mwc"
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},
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{
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"name": "https://github.com/TryGhost/ActivityPub/pull/1929",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/TryGhost/ActivityPub/pull/1929"
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},
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{
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"name": "https://github.com/TryGhost/ActivityPub/commit/1526f540b983da97750b380868a210e6cdfb985e",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/TryGhost/ActivityPub/commit/1526f540b983da97750b380868a210e6cdfb985e"
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},
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{
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"name": "https://github.com/TryGhost/ActivityPub/releases/tag/v1.2.6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/TryGhost/ActivityPub/releases/tag/v1.2.6"
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}
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],
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"affected": [
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{
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"vendor": "TryGhost",
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"product": "ActivityPub",
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"versions": [
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{
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"version": ">= 1.0.0, < 1.2.6",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-10-30T21:33:55.894Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "ActivityPub is a multi-tenant ActivityPub server for Ghost, built with Fedify. From 1.0.0 until 1.2.6, the `Undo` handler allows a remote federated server to cause the service to act on a `follow` or `repost` as though the activity came from a different account. This permits removal of an existing `follow` relationship or `repost` belonging to another account without that account's involvement. No private data is exposed and content is not modified; the affected relationships can be re-established. Services proxying to Ghost's hosted ActivityPub server have already been updated, while self-hosted services require an updated image and redeployment. This issue is fixed in version 1.2.6."
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}
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],
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"source": {
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"advisory": "GHSA-mm4q-93gr-5mwc",
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"discovery": "UNKNOWN"
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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": "2026-11-02T17:12:41.067713Z",
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"id": "CVE-2026-63115",
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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": "yes"
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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": "2026-11-02T18:09:53.602Z"
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}
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}
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]
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}
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} |