CVE-2026-44990 | THREATINT

Description

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.

PUBLISHED Reserved 2026-05-08 | Published 2026-06-12 | Updated 2026-06-15 | Assigner GitHub_M

CRITICAL: 9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 2.17.4

affected

References

github.com/...trophe/security/advisories/GHSA-rpr9-rxv7-x643 exploit

github.com/...trophe/security/advisories/GHSA-rpr9-rxv7-x643

cve.org (CVE-2026-44990)

nvd.nist.gov (CVE-2026-44990)

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