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CVE-2026-12299mediumCWE-733CWE-843

JIT miscompilation in the DOM: Core & HTML component

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.4epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
JIT miscompilation in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N