CVE-2026-0540CWE-79

DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML

Medium · published March 3, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
27.8
In the wild
Unconfirmed
What it is

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like </noscript><img src=x onerror=alert(1)> in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00353 · 27.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-03T17:26Z
EPSS history
Timeline
  • 03 MAR 17:26Z
    DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML
    cvelistv5