What is CVE-2026-65899?
CVE-2026-65899 is a vulnerability in DOMPurify versions 3.0.0 before 3.4.9 where the retained Trusted Types policy is not reset when clearConfig() is called. This causes a DOMPurify instance reused across trust boundaries to stay bound to a previously supplied TRUSTED_TYPES_POLICY. Users should update to version 3.4.9.
Azərbaycanca: CVE-2026-65899 DOMPurify 3.0.0 - 3.4.9 versiyalarında clearConfig() çağrıldıqda Trusted Types policy-nin sıfırlanmaması zəifliyidir. Bu, eyni DOMPurify instance-ı fərqli trust sərhədlərində istifadə edildikdə əvvəlki TRUSTED_TYPES_POLICY ilə bağlı qalmasına səbəb olur. Təsirə məruz qalan istifadəçilər DOMPurify-i 3.4.9 versiyasına yeniləməlidir.
FAQ2
Which versions of DOMPurify are affected by CVE-2026-65899?
CVE-2026-65899 affects DOMPurify versions 3.0.0 before 3.4.9.
What does the CVE-2026-65899 vulnerability in DOMPurify cause when clearConfig() is called?
This vulnerability causes a DOMPurify instance reused across trust boundaries to stay bound to a previously supplied TRUSTED_TYPES_POLICY when clearConfig() is called.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.