CVE-2026-77587

{"id": "CVE-2026-77587", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-77587", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T19:08:45.475220Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "torproject", "product": "Tor", "versions": [{"status": "affected", "version": "0.4.8.1-alpha", "lessThan": "0.4.9.11", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-20T21:17:10.957", "references": [{"url": "https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.11/ChangeLog", "source": "cve@mitre.org"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-911"}]}], "descriptions": [{"lang": "en", "value": "Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026."}], "lastModified": "2026-09-03T17:37:43.450", "sourceIdentifier": "cve@mitre.org"}