{"id":"CVE-2026-91095","published":"2026-09-28T21:17:19.170","lastModified":"2026-09-28T21:17:19.273","description":"In proxygen from v2024.10.28.00 until v2026.09.28.00, the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs could return stream handles that the stream handler had already freed. HQSession then installed those handles as transport read callbacks, which could lead to use of freed memory.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083","tags":[]},{"url":"https://www.facebook.com/security/advisories/cve-2026-91095","tags":[]}],"exploitRefs":[{"url":"https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083","tags":[]}],"hasPoc":true,"ai":null}