CVE-2021-38165

Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows remote attackers to discover cleartext credentials because they may appear in SNI data.

• CWE-522

• http://www.openwall.com/lists/oss-security/2021/08/07/11Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/08/07/12Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/08/07/9Mailing List, Third Party Advisory
• https://bugs.debian.org/991971Issue Tracking, Third Party Advisory
• https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/08/msg00010.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/
• https://lynx.invisible-island.net/current/CHANGES.htmlRelease Notes, Third Party Advisory
• https://www.debian.org/security/2021/dsa-4953Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/08/07/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/08/07/11Mailing List
• http://www.openwall.com/lists/oss-security/2021/08/07/11Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/08/07/12Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/08/07/9Mailing List, Third Party Advisory
• https://bugs.debian.org/991971Issue Tracking, Third Party Advisory
• https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/08/msg00010.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/
• https://lynx.invisible-island.net/current/CHANGES.htmlRelease Notes, Third Party Advisory
• https://www.debian.org/security/2021/dsa-4953Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/08/07/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/08/07/11Mailing List

Published

Aug 7, 2021

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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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• CVE-2021-38166In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, …7.8
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