What is GHSA-8mv4-xrj3-xg7m?

GHSA-8mv4-xrj3-xg7m is a security advisory published by GitHub Security Advisories with High severity. In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams ...

Which CVE IDs does GHSA-8mv4-xrj3-xg7m cover?

GHSA-8mv4-xrj3-xg7m covers the following CVE IDs: CVE-2026-91096. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-8mv4-xrj3-xg7m?

GHSA-8mv4-xrj3-xg7m has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-8mv4-xrj3-xg7mHighCVSS 7.5

In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams ...

Vendor

GitHub Security Advisories

Published

September 28, 2026

Last Modified

September 30, 2026

🔗 CVE IDs covered (1)

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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-91096
https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083
https://www.facebook.com/security/advisories/cve-2026-91096
https://github.com/advisories/GHSA-8mv4-xrj3-xg7m