CVE-2026-65899

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 TRUSTEDTYPESPOLICY. A later caller that requests RETURNTRUSTEDTYPE output receives a TrustedHTML...

CVE-2026-65899

The CVE affects DOMPurify 3.0.0 through 3.4.8, where clearConfig() does not reset the retained TRUSTED_TYPES_POLICY. This allows a DOMPurify instance reused across trust boundaries to remain bound to a previously supplied policy, so a later caller requesting RETURN_TRUSTED_TYPE output may receive...

CVE-2026-65899 DOMPurify before 3.4.9 Trusted Types Policy State Contamination

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 TRUSTEDTYPESPOLICY. A later caller that requests RETURNTRUSTEDTYPE output receives a TrustedHTML...

CVE-2026-65899

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 TRUSTEDTYPESPOLICY. A later caller that requests RETURNTRUSTEDTYPE output receives a TrustedHTML...

CVE-2026-65899 DOMPurify before 3.4.9 Trusted Types Policy State Contamination

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 TRUSTEDTYPESPOLICY. A later caller that requests RETURNTRUSTEDTYPE output receives a TrustedHTML...

CVE-2026-65898 DOMPurify before 3.4.11 Permanent Attribute Allowlist Pollution via setConfig

DOMPurify before 3.4.11 fails to clone the ALLOWEDATTR allowlist when setConfig is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements,...

CVE-2026-65898 DOMPurify before 3.4.11 Permanent Attribute Allowlist Pollution via setConfig

DOMPurify before 3.4.11 fails to clone the ALLOWEDATTR allowlist when setConfig is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements,...

CVE-2026-65898

DOMPurify before 3.4.11 is affected. The vulnerability arises when setConfig() is used with an uponSanitizeAttribute hook and the ALLOWED_ATTR allowlist isn’t cloned, allowing the hook to permanently mutate the shared allowlist. An attacker can register a hook that conditionally permits dangerous...

CVE-2026-65898

DOMPurify before 3.4.11 fails to clone the ALLOWEDATTR allowlist when setConfig is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements,...

PT-2026-63990

Name of the Vulnerable Software and Affected Versions DOMPurify versions 3.0.0 through 3.3.3 Description When using the IN PLACE mode, the software fails to sanitize DOM elements that originate from a different window or realm, such as an iframe's contentDocument. This occurs because a cross-real...

PT-2026-63991

Name of the Vulnerable Software and Affected Versions DOMPurify versions prior to 3.4.0 Description Function predicates provided via ADD ATTR or ADD TAGS to the DOMPurify.sanitize function persist in the internal state EXTRA ELEMENT HANDLING across multiple calls on the same instance. If a...

PT-2026-63994

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper...

Incomplete List of Disallowed Inputs

Overview dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs in the CUSTOMELEMENTHANDLING. An attacker can cause security-relevant attributes to be preserved on allowed custom elements by leveragi...

GHSA-C2J3-45GR-MQC4 DOMPurify: `CUSTOM_ELEMENT_HANDLING` bypasses `afterSanitizeElements` for allowed custom elements.

Summary There is a possible hook-policy inconsistency in DOMPurify 3.4.11 involving CUSTOMELEMENTHANDLING. When a custom element is allowed via CUSTOMELEMENTHANDLING.tagNameCheck, it appears that the element does not go through afterSanitizeElements in the same way as a normal element. As a resul...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2483 more potentially affected by CVE-2026-66010 via dompurify (>=3.0.0, <=3.4.11)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.0.1, =0.1.0, =0.1.0-alpha.1, =0.1.0, =0.3.9 and more Source cves: CVE-2026-66010 Source advisory: SNYK:JS-DOMPURIFY-18170233...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2483 more potentially affected by CVE-2026-66010 via dompurify (>=3.0.0, <=3.4.11)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.0.1, =0.1.0, =0.1.0-alpha.1, =0.1.0, =0.3.9 and more Source cves: CVE-2026-66010 Source advisory: OSV:GHSA-C2J3-45GR-MQC4...

Security Bulletin: SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in form-data and DOMPurify

Summary SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in form-data and DOMPurify. This has been addressed in the remediation section. Vulnerability Details CVEID:CVE-2026-12143 DESCRIPTION: form-data is a library for creating readable multipart/form-data...

Security Bulletin: IBM DataPower Gateway affected by cross-site scripting due to DOMPurify (CVE-2026-0540)

Summary DOMPurify is used by the UI component of IBM DataPower Gateway Vulnerability Details CVEID:CVE-2026-0540 DESCRIPTION: DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, contain a cross-site scripting vulnerability that allows attackers to bypass attribute...

ROOT-APP-NPM-GHSA-VXR8-FQ34-VVX9 GHSA-vxr8-fq34-vvx9 in @rootio/dompurify - Patched by Root

Root has patched GHSA-vxr8-fq34-vvx9 in the @rootio/dompurify package for Root:npm. Multiple fixed versions available...

SUSE CVE-2026-47423

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...