CVE-2026-16358

Description

Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2040119
• https://www.mozilla.org/security/advisories/mfsa2026-68/
• https://www.mozilla.org/security/advisories/mfsa2026-69/
• https://www.mozilla.org/security/advisories/mfsa2026-70/