HIGH 7.5 Microsoft
CVE-2026-27135
nghttp2 Denial of service: Assertion failure due to the missing state validation
Microsoft Security Update 2026-Mar: nghttp2 Denial of service: Assertion failure due to the missing state validation
Affected Products
- azl3 nghttp2 1.61.0-2 on Azure Linux 3.0
- azl3 cmake 3.30.3-12 on Azure Linux 3.0
- azl3 nodejs 20.14.0-13 on Azure Linux 3.0
- azl3 rust 1.75.0-25 on Azure Linux 3.0
- azl3 rust 1.90.0-4 on Azure Linux 3.0
- cbl2 cmake 3.21.4-21 on CBL Mariner 2.0
- cbl2 nghttp2 1.57.0-2 on CBL Mariner 2.0
- cbl2 nodejs18 18.20.3-11 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27135
- https://nvd.nist.gov/vuln/detail/CVE-2026-27135
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-03-10 via Microsoft. Affected: azl3 nghttp2 1.61.0-2 on Azure Linux 3.0, azl3 cmake 3.30.3-12 on Azure Linux 3.0, azl3 nodejs 20.14.0-13 on Azure Linux 3.0 and 5 more.
vulnfeed aggregates 9044 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.