CVE-2026-44990
Critical · 9.3CVSS
9.3
EPSS
0.7%
Published
Jun 12, 2026
CISA due date
—
The record
ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Under the default configuration, versions of `sanitize-html` prior to 2.17.4 can turn attacker-controlled content inside a disallowed `xmp` element into live HTML or JavaScript. This is a sanitizer bypass in the default `disallowedTagsMode: 'discard'` path and can lead to stored XSS in applications that render sanitized output back to users. Version 2.17.4 patches the issue.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | sanitize-html | 2.17.3 | 2.17.4 |
Related vulnerabilities
- GHSA-rpr9-rxv7-x643 Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html` Same vulnerability
- GHSA-9mrh-v2v3-xpfm sanitize-html allowedTags Bypass via Entity-Decoded Text in nonTextTags Elements Also affects sanitize-html
- CVE-2026-40186 ApostropheCMS is an open-source Node.js content management system. Also affects sanitize-html
- CVE-2019-25225 sanitize-html is vulnerable to XSS through incomprehensive sanitization Also affects sanitize-html
- CVE-2026-96379 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")… CWE-79
- CVE-2026-96382 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")… CWE-79
- CVE-2026-96368 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")… CWE-79
- CVE-2026-96361 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")… CWE-79