Protection Mechanism Failure Affecting node-dompurify package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.23% (15th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODEDOMPURIFY-18291585
  • published24 Jul 2026
  • disclosed23 Jul 2026

Introduced: 23 Jul 2026

NewCVE-2026-65899  (opens in a new tab)
CWE-693  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest node-dompurify.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-dompurify package and not the node-dompurify package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1