Medium 6.1

DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to...

CVE-2026-116802 First seen on SecPulse 08:05

Affected packages

Ecosystem	Package	Affected	Fixed
cure53	DOMPurify	< 3.4.17	3.4.17

Original description The description as published by the source.

DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to bypass the SMIL attributeName=href guard when PARSER_MEDIA_TYPE is application/xhtml+xml, because transformCaseFunc does not lowercase attribute names. Attackers can submit SVG with an animate or set element using attributeName="href" and a javascript: entry in values to execute script when users click the sanitized link.

Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory

References

Key facts

CVSS v3: Medium 6.1; CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4: Medium 5.1; CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Published: Oct 27, 2026
First seen on SecPulse: 08:05
GHSA: GHSA-g32m-chc6-3wqf
CWE: CWE-79

NVD GitHub Advisory

Tags(click for explanation)

Programming Languages

JavaScript

Attack Types

Cross-Site Scripting

CWE

CWE-79

All

Cure53 Dompurify

Detection sources

NIST National Vulnerability Database09:17
GitHub Security Advisories (Global)09:32
CVE.org (CVE Program・cvelistV5)08:05