CVE-2026-0540

unknown
Published 2026-03-03 · Modified 2026-03-30
CVSS v3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v2
VIR risk

Description

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.

Predictions

Exploit likelihood
30%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-0540

OS impact

OSVersionStatusFixed in
debian debianbookwormaffected
debian debianforkyfixed3.3.2+dfsg-1
debian debiansidfixed3.3.2+dfsg-1
debian debiantrixieaffected

Package impact

EcosystemPackageVulnerableFixed
npm npmdompurify>=3.1.3,<3.3.23.3.2
npm npmdompurify>=2.5.3,<2.5.92.5.9

References

Verify integrity in audit chain (admin only). AS-IS.