CVE-2025-15599: DOMPurify XSS via Textarea Rawtext Bypass in SAFE_FOR_XML

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-03 · updated 2026-10-08
Weakness: CWE-79

Description

DOMPurify 3.1.3 through 3.2.6 and 2.5.3 through 2.5.8 contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting missing textarea rawtext element validation in the SAFE_FOR_XML regex. Attackers can include closing rawtext tags like </textarea> in attribute values to break out of rawtext contexts and execute JavaScript when sanitized output is placed inside rawtext elements. The 3.x branch was fixed in 3.2.7; the 2.x branch was never patched.

Affected products

cure53 DOMPurify: from 2.5.3 through 2.5.8; from 3.1.3 before 3.2.7 — fixed in 3.2.7

How to fix

Upgrade to a fixed version: cure53 DOMPurify 3.2.7. Check the vendor advisory for mitigations.

References

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