CVE-2026-100809

Description

Same-origin policy bypass in the DevTools component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2063658
• https://www.mozilla.org/security/advisories/mfsa2026-100/
• https://www.mozilla.org/security/advisories/mfsa2026-97/