CVE-2026-65899 | BDVDB-2026-352175 Detail

Description#

DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call also does not clear the retained policy.

Impact#

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Exploit#

History#

1. Version 12026-07-23Record published in the CVE List.
2. Version 22026-10-08Most recent update recorded in the CVE List.