CVE WatchSep 28, 2026

CVE-2026-91096

In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases befor

CVSS

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No CVSS

EPSS

0.3%

p17

KEV

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Exploit Today

0-100

Published: Sep 28, 2026 · Last modified: Sep 28, 2026

EPSS · 30d

0.1%EPSS · 30 days0.3%

2026-09-292026-10-25

Technical 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.

Official references

github.comhttps://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083
www.facebook.comhttps://www.facebook.com/security/advisories/cve-2026-91096

Related CVEs

No related CVEs by CWE or product.