{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77584", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-08-20T20:38:41.768Z", "datePublished": "2026-08-20T20:38:42.159Z", "dateUpdated": "2026-08-20T20:38:42.159Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Tor", "vendor": "torproject", "versions": [{"lessThan": "0.4.9.10", "status": "affected", "version": "0.4.8.1-alpha", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-821", "description": "CWE-821 Incorrect Synchronization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-20T20:38:42.159Z"}, "references": [{"url": "https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.10/ChangeLog"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.4.8.1-alpha", "versionEndExcluding": "0.4.9.10"}]}]}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Tor", "vendor": "torproject", "versions": [{"lessThan": "0.4.9.10", "status": "affected", "version": "0.4.8.1-alpha", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025."}], "id": "CVE-2026-77584", "lastModified": "2026-08-20T21:17:10.810", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 4.7, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-08-20T21:17:10.810", "references": [{"source": "cve@mitre.org", "url": "https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.10/ChangeLog"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-821"}], "source": "cve@mitre.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0.4.8.1-alpha,0.4.9.10)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Tor", "source": "cna", "vendor": "torproject"}, "product": "tor", "vendor": "torproject"}], "created": "2026-08-21T01:30:05.839991+00:00", "title": "Use\u2011After\u2011Free via CONFLUX_LINK Handling", "updated": "2026-08-21T02:00:04.975833+00:00", "vendors": ["torproject", "torproject$PRODUCT$tor"]}