CVE-2020-27813

An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection. An attacker would use this flaw to cause a denial of service attack on an HTTP Server allowing websocket connections.

• CWE-190
• CWE-190
• CWE-400

• https://bugzilla.redhat.com/show_bug.cgi?id=1902111Issue Tracking, Third Party Advisory
• https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjhThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/01/msg00008.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1902111Issue Tracking, Third Party Advisory
• https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjhThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/01/msg00008.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html

Published

Dec 2, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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