CVE-2026-12294
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/06/2026
Last modified:
16/06/2026
Description
Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
Impact
References to Advisories, Solutions, and Tools
- https://bugzilla.mozilla.org/show_bug.cgi?id=2039873
- https://www.mozilla.org/security/advisories/mfsa2026-57/
- https://www.mozilla.org/security/advisories/mfsa2026-58/
- https://www.mozilla.org/security/advisories/mfsa2026-59/
- https://www.mozilla.org/security/advisories/mfsa2026-60/
- https://www.mozilla.org/security/advisories/mfsa2026-61/