MEDIUM
CVE-2026-12302
CVSS
6.5
Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
Weakness (CWE)
CWE-693
EPSS Score
0.25%
Probability of exploitation in next 30 days
16.4th percentile
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2034489
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-57/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-58/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-59/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-60/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-61/
Vendor Advisory
Base CVE data derived from NVD (public domain). Enrichment by
dbcve.org
(CC-BY-4.0). Fetched via API.