------------------------------------------------------------------------- Debian LTS Advisory DLA-4581-1 [email protected] https://www.debian.org/lts/security/ Lukas Märdian May 13, 2026 https://wiki.debian.org/LTS -------------------------------------------------------------------------
Package : nghttp2
Version : 1.43.0-1+deb11u3
CVE ID : CVE-2026-27135
Debian Bug : 1131369
A vulnerabilitie was discovered in nghttp2, a server, proxy and client
implementing HTTP/2.
CVE-2026-27135
Fix missing iframe->state validations to avoid assertion failure. As
backported from upstream v1.68.1 (commit 5c7df8f), incl. upstream test case
from commit c619c7be0737ac78051b1cacf4b1ce5467eb838d.
For Debian 11 bullseye, this problem has been fixed in version
1.43.0-1+deb11u3.
We recommend that you upgrade your nghttp2 packages.
For the detailed security status of nghttp2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/nghttp2
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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