CVE-2026-44990
Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html`
HIGH 8.1EPSS 0.7%
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
- apostrophecms · sanitize-html
- CVSS v3.1 CNA
- 8.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - CVSS v3.1 GITHUB
- 9.3 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - EPSS
- 0.69% chance of exploitation in the next 30 days, 52nd percentile
- Published
- 2026-06-12
- Updated
- 2026-09-10