Description (CNA)
DOMPurify through 3.3.3 fails to sanitize DOM elements passed via IN_PLACE 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 stringify the element (yielding '[object HTMLDivElement]'), silently reset IN_PLACE to false, and return the unsanitized element unchanged with any XSS payloads intact.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| cure53 / DOMPurify | affected 0 through 3.3.3 |
CWE
CWE-754
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-4w3q-35jp-p934
- https://www.vulncheck.com/advisories/dompurify-before-cross-site-scripting-via-in-place-mode
ADP enrichment
No English description supplied.