CVE-2026-44990

CRITICAL EPSS 24.1%

Published Jun 12, 20262w ago · Modified Jun 17, 20262w ago

9.3 CVSS 3.1

Critical

Published Jun 12, 2026 2w ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

9.3

Exploitability

2.8

Impact

5.8

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Changed

Confidentiality High

Integrity High

Availability None

Threat Intelligence

EPSS Exploit Probability

24.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 1

github.com https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-rpr9-rxv7-x643

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.