{"id":"CVE-2026-84894","aliases":["EUVD-2026-88433","GHSA-mqcv-532f-gp47"],"status":"published","title":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read...","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00255,"percentile":0.17186,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-09-28T18:40:55Z","modified":"2026-10-20T17:56:27Z","products":[{"vendor":"meta platforms, inc","product":"moxygen"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2026-84894","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/facebookexperimental/moxygen/commit/004123dd24c30dad6b649163575145f240dabc94","tags":["x_refsource_MISC","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84894"},{"url":"https://github.com/advisories/GHSA-mqcv-532f-gp47"}],"sources":{"cve":[{"id":"CVE-2026-84894","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","status":"published","published":"2026-09-28T18:40:55.707Z","modified":"2026-09-30T15:05:50.817Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:20:08.734143Z"}],"euvd":[{"id":"EUVD-2026-88433","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","status":"published","published":"2026-09-28T18:40:55Z","modified":"2026-09-30T15:05:50Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T17:27:49.499669Z"}],"ghsa":[{"id":"GHSA-mqcv-532f-gp47","title":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read...","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","status":"published","published":"2026-09-28T21:31:17Z","modified":"2026-09-30T18:34:08Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:12:38.152609Z"}],"nvd":[{"id":"CVE-2026-84894","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","status":"published","published":"2026-09-28T19:16:50.213Z","modified":"2026-09-30T19:57:08.043Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:52.413234Z"}],"osv":[{"id":"CVE-2026-84894","description":"In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carries the FIN in the same write.","status":"published","published":"2026-09-28T19:16:50.213Z","modified":"2026-10-20T17:56:27.253610121Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:18.482949Z"}]}}