CVE-2026-92005
Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
- Published Sep 15, 2026
- CVSS 5.3 medium
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available