CVE-2023-23602

A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

• CWE-754
• CWE-754

• https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-01/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-02/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-03/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-01/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-02/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-03/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory

Published

Jun 2, 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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