CVE-2023-6209

Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

• CWE-22

• https://bugzilla.mozilla.org/show_bug.cgi?id=1858570Issue Tracking, Permissions Required
• https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
• https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
• https://www.debian.org/security/2023/dsa-5561Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1858570Issue Tracking, Permissions Required
• https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
• https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
• https://www.debian.org/security/2023/dsa-5561Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory

Published

Nov 21, 2023

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.
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