CVE-2026-27135

Name
CVE-2026-27135
Description
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/nghttp2/nghttp2/commit/5c7df8fa815ac1004d9ecb9d1f7595c4d37f46e1
security-advisories@github.com https://github.com/nghttp2/nghttp2/security/advisories/GHSA-6933-cjhr-5qg6
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2026/03/20/3

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* nghttp2 >= None < 1.68.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nghttp2 edge-main 1.68.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.67.1-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.66.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.65.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.64.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.57.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 edge-main 1.41.0-r0 None possibly vulnerable
nghttp2 edge-main 1.39.2-r0 None possibly vulnerable
nghttp2 3.23-main 1.68.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 3.22-main 1.65.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 3.22-main 1.57.0-r0 None possibly vulnerable
nghttp2 3.22-main 1.41.0-r0 None possibly vulnerable
nghttp2 3.22-main 1.39.2-r0 None possibly vulnerable
nghttp2 3.21-main 1.64.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 3.21-main 1.57.0-r0 None possibly vulnerable
nghttp2 3.21-main 1.41.0-r0 None possibly vulnerable
nghttp2 3.21-main 1.39.2-r0 None possibly vulnerable
nghttp2 3.20-main 1.62.1-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 3.20-main 1.57.0-r0 None possibly vulnerable
nghttp2 3.20-main 1.41.0-r0 None possibly vulnerable
nghttp2 3.20-main 1.39.2-r0 None possibly vulnerable
nghttp2 3.19-main 1.58.0-r0 Francesco Colista <fcolista@alpinelinux.org> possibly vulnerable
nghttp2 3.19-main 1.57.0-r0 None possibly vulnerable
nghttp2 3.19-main 1.41.0-r0 None possibly vulnerable
nghttp2 3.19-main 1.39.2-r0 None possibly vulnerable