CVE-2026-0877
Mozilla Firefox, Thunderbird, Red Hat Enterprise Linux 10
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
- CVSS
- 8.1
- EPSS
- 0.42% 34.7% percentile
- CISA KEV
- Not listed
- Published
- 2026.01.13