CVE-2026-74946
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 18, 2026 |
| Last Updated | Aug 18, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2059997 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-74/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-75/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-76/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-77/
Credits
locust1b