CVE-2026-116804
CVE-2026-116804 · DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content
This page contains facts from public vulnerability sources. Check the original advisory before updating.
DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.
CVSS 5.1 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
dompurify
- Versions
- ≥ 3.4.4, < 3.4.17: Affected (semver)
- 3.4.17: Not affected (semver)
Update to 3.4.17
node-dompurify Debian:14
- Versions
- 3.1.7+dfsg+~3.0.5-2
- 3.2.5+dfsg-1
- 3.3.2+dfsg-1
- 3.3.3+dfsg-1
- 3.3.3+dfsg-2
- 3.4.1+dfsg-1
- 3.4.12+dfsg-1
- 3.4.13+dfsg-1
- 3.4.13+dfsg-2
- 3.4.16+dfsg-1
- 3.4.17+dfsg-1
- 3.4.2+dfsg-1
- 3.4.5+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dompurify npm
- Affected ranges
- SEMVER: ≥ 3.4.4, < 3.4.17
Update to 3.4.17
node-dompurify Ubuntu:22.04:LTS
- Versions
- 2.3.0+dfsg-2
- 2.3.3+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
node-dompurify Ubuntu:24.04:LTS
- Versions
- 2.4.1+dfsg+~2.4.0-1
- 3.0.9+dfsg+~3.0.5-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
node-dompurify Ubuntu:26.10
- Versions
- 3.3.3+dfsg-1
- 3.4.2+dfsg-1
- 3.4.5+dfsg-1
- 3.4.12+dfsg-1
- 3.4.13+dfsg-1
- 3.4.13+dfsg-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
node-dompurify Ubuntu:26.04:LTS
- Versions
- 3.1.7+dfsg+~3.0.5-2
- 3.3.3+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published