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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-65899)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-65899)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
460792	Echo: dompurify: security update to 3.4.9	Tenable Cloud Security	Echo Local Security Checks	Local	medium
460792	Echo: dompurify: security update to 3.4.9	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
329602	Linux Distros Unpatched Vulnerability : CVE-2026-65899	Nessus	Misc.	Local	medium
443230	SCA: security update for dompurify (GHSA-vxr8-fq34-vvx9)	Tenable Cloud Security	SCA Checks	Local	medium
443230	SCA: security update for dompurify (GHSA-vxr8-fq34-vvx9)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-65899

medium

Tenable Plugins

medium

medium

medium

medium

medium