Protection Mechanism Failure Affecting nextcloud-server-33 package, versions <33.0.6-r5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.23% (15th percentile)

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  • Snyk IDSNYK-WOLFILATEST-NEXTCLOUDSERVER33-18299443
  • 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?

Upgrade Wolfi nextcloud-server-33 to version 33.0.6-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nextcloud-server-33 package and not the nextcloud-server-33 package as distributed by Wolfi. See How to fix? for Wolfi 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