CVE-2026-109345
Published:October 12, 2026
Updated:October 15, 2026
DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.
Affected Packages
dompurify (CDN_JS):
Affected version(s) >=3.0.0 <3.4.16Fix Suggestion:
Update to version 3.4.16https://github.com/cure53/DOMPurify.git (GITHUB):
Affected version(s) >=3.0.0 <3.4.16Fix Suggestion:
Update to version 3.4.16dompurify (NPM):
Affected version(s) >=3.0.0 <3.4.16Fix Suggestion:
Update to version 3.4.16Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.20