DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. …
Medium CVSS 6.1
Summary
DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-c2j3-45gr-mqc4 Exploit
- https://www.vulncheck.com/advisories/dompurify-before-hook-bypass-via-custom-element-handling Third Party Advisory
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-c2j3-45gr-mqc4 Exploit
Timeline
- nvd_ingest NVD