Description
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 <selectedcontent> is returned. This issue is fixed in version 3.4.5.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx
X_Refsource_Misc x_refsource_misc
https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea
X_Refsource_Misc x_refsource_misc
https://github.com/cure53/DOMPurify/releases/tag/3.4.5
Scores
CVSS v3
8.2
EPSS
0.0027
EPSS Percentile
19.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
cure53/dompurify
3.4.4
cure53/DOMPurify
>= 3.4.4, < 3.4.5
Published
Jul 14, 2026
Tracked Since
Jul 15, 2026