CVE-2026-109345CWE-79cross-site-scripting

CVE-2026-109345

Medium · published October 12, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
9.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
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
EPSS
0.00204 · 9.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-12T21:17Z
References (3)
https://github.com/cure53/DOMPurify/security/advisories/GHSA-6688-9rhm-gjv2 · [email protected]https://www.vulncheck.com/advisories/dompurify-before-3.4.16-xss-via-in-place-returned-rawtext-root · [email protected]https://github.com/cure53/DOMPurify/security/advisories/GHSA-6688-9rhm-gjv2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:05Z
    DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root
    cvelistv5
  • 12 OCT 16:05Z
    DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root
    cvelistv5