CVE-2026-16359

CRITICAL 9.1CVE-2026-16359 · Published 21/07/2026 · updated 24/10/2026

Package	Affected versions	Patched versions
firefox mozilla	`≥ 128.1.0, < 140.13.0< 115.38.0< 153.0.0`	`140.13.0115.38.0153.0.0`
thunderbird mozilla	`≥ 141.0, < 153.0< 140.13.0`	`153.0140.13.0`

Description

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-68 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-69 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-70 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-71 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-72 · Vendor Advisory

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free