{"id":"CVE-2026-91096","aliases":["EUVD-2026-88545","GHSA-8mv4-xrj3-xg7m"],"status":"published","title":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams ...","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","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":"2026-11-10","score":0.00255,"percentile":0.17153,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-09-28T20:44:57Z","modified":"2026-11-05T08:03:59Z","products":[{"vendor":"facebook","product":"proxygen"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2026-91096","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083","tags":["x_refsource_MISC","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91096"},{"url":"https://github.com/advisories/GHSA-8mv4-xrj3-xg7m"}],"sources":{"cve":[{"id":"CVE-2026-91096","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","status":"published","published":"2026-09-28T20:44:57.363Z","modified":"2026-09-30T19:47:55.479Z","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":"2026-11-02T14:19:52.773089Z"}],"euvd":[{"id":"EUVD-2026-88545","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","status":"published","published":"2026-09-28T20:44:57Z","modified":"2026-09-30T19:47:55Z","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":"2026-11-02T17:27:47.733217Z"}],"ghsa":[{"id":"GHSA-8mv4-xrj3-xg7m","title":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams ...","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","status":"published","published":"2026-09-28T21:31:22Z","modified":"2026-09-30T21:31:58Z","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":"2026-11-02T15:12:38.770231Z"}],"nvd":[{"id":"CVE-2026-91096","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","status":"published","published":"2026-09-28T21:17:19.313Z","modified":"2026-09-30T20:17:36.637Z","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-2026-91096","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.","status":"published","published":"2026-09-28T21:17:19.313Z","modified":"2026-11-05T08:03:59.07746171Z","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":"2026-11-05T09:08:14.330889Z"}]}}