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Medium severity6.1NVD Advisory· Published Jul 23, 2026· Updated Jul 28, 2026

CVE-2026-65899

CVE-2026-65899

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
dompurifynpm
< 3.4.93.4.9

Affected products

63

Patches

Vulnerability mechanics

References

4

News mentions

0

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