Medium severity · published Oct 12, 2026
CVE-2026-109345
DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
DOMPurify · cure53
before 3.4.16 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109345
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109345
vendor-advisory
https://github.com/cure53/DOMPurify/security/advisories/GHSA-6688-9rhm-gjv2
third-party-advisory
https://www.vulncheck.com/advisories/dompurify-before-3.4.16-xss-via-in-place-returned-rawtext-root
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