Description
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| cure53 | DOMPurify | >= 3.4.4, < 3.4.5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-dompurify | 3.4.5+dfsg-1 | — |
| Debian 13 | node-dompurify | No fix yet | — |
| Debian 12 | node-dompurify | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | node-dompurify | No fix yet | — |
| Ubuntu 26.04 LTS | node-dompurify | No fix yet | — |
| Ubuntu 24.04 LTS | node-dompurify | No fix yet | — |
| Ubuntu 22.04 LTS | node-dompurify | No fix yet | — |
| Ubuntu 18.04 LTS | dompurify.js | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | dompurify.js | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | ruff +1 | 0.15.11-1.hum1 | RHSA-2026:10999 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
Galaxy-sc/CVE-2026-47423-dompurify-xss-detector ★ 0 · Jun 3, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | dompurify | >= 3.4.4, < 3.4.5 | 3.4.5 | GHSA-87xg-pxx2-7hvx |
Advisories 2
- RHSA-2026:10999 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2026-2910 IBM App Connect Enterprise: Schwachstelle ermöglicht Cross-Site Scripting BSI CERT-Bund (WID) · Aug 18, 2026