DEBIAN-CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

UBUNTU-CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010 DOMPurify before 3.4.12 Hook Bypass via CUSTOM_ELEMENT_HANDLING

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010 DOMPurify before 3.4.12 Hook Bypass via CUSTOM_ELEMENT_HANDLING

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010 DOMPurify before 3.4.12 Hook Bypass via CUSTOM_ELEMENT_HANDLING

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010

DOMPurify before 3.4.12 has a vulnerability where afterSanitizeElements is not executed for custom elements allowed by CUSTOM_ELEMENT_HANDLING.tagNameCheck, enabling attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements and later re-inj...

EUVD-2026-48582

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

CVE-2026-66010

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into...

PT-2026-105528

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-c2j3-45gr-mqc4. This link is maintained to preserve external references. Original Description DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM ELEMENT...

CVE-2026-65904

DOMPurify through 3.3.3 fails to sanitize DOM elements passed via INPLACE mode when the element originates from a different window/realm e.g., an iframe's contentDocument. A cross-realm instanceof check in the private isNode function returns false for foreign-realm nodes, causing DOMPurify to...

CVE-2026-65900 DOMPurify before 3.4.8 Template Expression Injection via RETURN_DOM

DOMPurify versions =3.0.0 and before 3.4.8, when configured with SAFEFORTEMPLATES together with a DOM output mode RETURNDOM, RETURNDOMFRAGMENT, or INPLACE, fail to strip template expressions e.g. $evil, evil, inside element content. The final normalization/scrub pass scrubTemplateExpressions uses...

GHSA-CJ75-F6XR-R4G7 Rails HTML Sanitizers: Possible XSS vulnerability with certain configurations

Summary There is a possible cross-site scripting vulnerability in rails-html-sanitizer when the sanitizer is configured to allow an SVG reference element such as . See related GHSA-9wjq-cp2p-hrgf in Loofah, whose SVG local-reference logic rails-html-sanitizer mirrors. - Versions affected: = 1.0.3...

Rails HTML Sanitizers: Possible XSS vulnerability with certain configurations

Summary There is a possible cross-site scripting vulnerability in rails-html-sanitizer when the sanitizer is configured to allow an SVG reference element such as . See related GHSA-9wjq-cp2p-hrgf in Loofah, whose SVG local-reference logic rails-html-sanitizer mirrors. - Versions affected: = 1.0.3...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS in the sanitization process when SVG reference elements such as or are included in the overridden allowed tags. An attacker can execute arbitrary scripts or load external resources by crafting SVG elements with...

SVGO removeScripts plugin leaves some executable scripts intact

Summary SVGO's removeScripts plugin disabled by default removes scripts from the SVG, however executable scripts were left intact in some cases. If a consumer relied on this plugin for sanitization and served them to users, these SVGs could open up doors to XSS. Details SVGO has a plugin for...

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...