Veille CVE
CVE-2026-65904
4.7 MoyenneDescription
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.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 4.0 | 2.3 Faible | disclosure@vulncheck.com | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| 3.1 | 4.7 Moyenne | disclosure@vulncheck.com | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
Faiblesses (CWE)
Références
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-4w3q-35jp-p934 ExploitThird Party Advisory
- https://www.vulncheck.com/advisories/dompurify-before-cross-site-scripting-via-in-place-mode Third Party Advisory
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-4w3q-35jp-p934 ExploitThird Party Advisory