Use-after-free in the DOM: HTML Parser component

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Use-after-free in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

Source published

27 Oct 2026 14:05:10 UTC

Source modified

27 Oct 2026 18:28:20 UTC

Observed here

27 Oct 2026 19:45:55 UTC

Source terms

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