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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 28 Sep 2026 23:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Facebook
Facebook proxygen |
|
| Vendors & Products |
Facebook
Facebook proxygen |
Mon, 28 Sep 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Use-after-free in Facebook proxygen HTTP stream handlers | |
| Weaknesses | CWE-416 |
Mon, 28 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| References |
|
Projects
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Status: PUBLISHED
Assigner: Meta
Published:
Updated: 2026-09-28T20:44:45.928Z
Reserved: 2026-09-14T18:40:39.036Z
Link: CVE-2026-91095
No data.
Status : Deferred
Published: 2026-09-28T21:17:19.170
Modified: 2026-09-28T21:17:19.273
Link: CVE-2026-91095
No data.
OpenCVE Enrichment
Updated: 2026-09-28T23:00:07Z
Weaknesses