Vulnerability intelligence
CVE-2026-6746
Mozilla Firefox
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.5
High
EPSS — Exploit Probability
0.6%
Riskier than 46% of all CVEs · checked 2026-09-08
Exploitation
Not in CISA KEV
KEV does not include every exploited vulnerability
Remediation
unknown
Check vendor advisories
1 article across 1 outlet · first covered Apr 22, 2026 · latest Apr 22, 2026
Coverage timeline
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Claude Mythos Finds 271 Firefox Vulnerabilitieswww.securityweek.com · Apr 22, 2026