CVE-2026-84895

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "proxygen", "vendor": "Facebook", "versions": [{"lessThan": "v2026.09.28.00", "status": "affected", "version": "v2026.04.06.00", "versionType": "semver"}]}], "source": "cve-assign@fb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In proxygen from v2026.04.06.00 until v2026.09.28.00, QuicWtSession::closeSession accesses its member fields after calling the base QuicWtSessionBase::closeSession method. The base method notifies the session handler, which may release the last reference to the session and destroy it."}], "id": "CVE-2026-84895", "lastModified": "2026-10-01T15:17:32.457", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84895", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-01T14:01:47.375791Z", "version": "2.0.3"}}]}, "published": "2026-09-28T21:17:19.027", "references": [{"source": "cve-assign@fb.com", "url": "https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083"}, {"source": "cve-assign@fb.com", "url": "https://www.facebook.com/security/advisories/cve-2026-84895"}], "sourceIdentifier": "cve-assign@fb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[v2026.04.06.00,v2026.09.28.00)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "proxygen", "source": "cna", "vendor": "Facebook"}, "product": "proxygen", "vendor": "facebook"}], "created": "2026-09-28T22:30:08.184413+00:00", "updated": "2026-10-01T17:30:10.794635+00:00", "vendors": ["facebook", "facebook$PRODUCT$proxygen"]}