CVE-2026-109345

CVSS 6.1 (medium) · published 2026-10-12

DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.

Weakness: CWE-79

Source: NVD CVE-2026-109345

References

• https://github.com/cure53/DOMPurify/security/advisories/GHSA-6688-9rhm-gjv2
• https://www.vulncheck.com/advisories/dompurify-before-3.4.16-xss-via-in-place-returned-rawtext-root
• https://github.com/cure53/DOMPurify/security/advisories/GHSA-6688-9rhm-gjv2

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