CVE-2026-57436

mediumCVSS 5.3covered by 1 sourcefirst seen 2026-06-09

CSIRTS triage

What: There is a possible use-after-free when setting Document#root to an invalid node type.
Who is affected: Deployments using Nokogiri.
Urgency: Remediation is medium urgency due to the medium severity rating.
Action: Apply the fix for CVE-2026-57436.

AI-assisted analysis generated from the source advisory — verify against the original.

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Low exploitation risk0.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.

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