CVE-2026-124917

Description

Sandbox escape due to use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.

Affected Platforms

Weakness Type

Unknown

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2058648
• https://www.mozilla.org/security/advisories/mfsa2026-125/
• https://www.mozilla.org/security/advisories/mfsa2026-127/