CVE-2026-27135

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Source
https://cve.org/CVERecord?id=CVE-2026-27135
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-27135.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-27135
Aliases
  • GHSA-6933-cjhr-5qg6
Downstream
Related
Published
2026-03-18T17:59:02.045Z
Modified
2026-04-09T11:10:44.779787Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
nghttp2 Denial of service: Assertion failure due to the missing state validation
Details

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 FRAMESIZEERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27135.json",
    "cwe_ids": [
        "CWE-617"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/nghttp2/nghttp2

Affected ranges

Type
GIT
Repo
https://github.com/nghttp2/nghttp2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f769990597670f3ea8d2440d1e18a3f9a0df9bc0

Affected versions

v0.*
v0.2.0
v0.3.0
v0.3.1
v0.4.0
v0.4.1
v0.5.0
v0.5.1
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.7.0
v0.7.1
v0.7.10
v0.7.11
v0.7.12
v0.7.13
v0.7.14
v0.7.15
v0.7.2
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.1.0
v1.1.1
v1.1.2
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.18.0
v1.19.0
v1.2.0
v1.2.1
v1.20.0
v1.21.0
v1.22.0
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.28.0
v1.29.0
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.30.0
v1.31.0
v1.32.0
v1.33.0
v1.34.0
v1.35.0
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.4.0
v1.40.0
v1.41.0
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.47.0
v1.48.0
v1.49.0
v1.5.0
v1.50.0
v1.51.0
v1.52.0
v1.53.0
v1.54.0
v1.55.0
v1.56.0
v1.57.0
v1.58.0
v1.59.0
v1.6.0
v1.60.0
v1.61.0
v1.62.0
v1.63.0
v1.64.0
v1.65.0
v1.66.0
v1.67.0
v1.68.0
v1.7.0
v1.8.0
v1.9.0
v1.9.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-27135.json"