CVE-2026-16405 PUBLISHED

Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

• Yaqoub Aldurayhim

• https://bugzilla.mozilla.org/show_bug.cgi?id=2036591
• https://www.mozilla.org/security/advisories/mfsa2026-68/
• https://www.mozilla.org/security/advisories/mfsa2026-70/