CVE-2026-44990
CriticalCVSS 9.3Exploitation Probability (EPSS)
Low risk29th percentile — higher than 29% of all known CVEs
Summary
A vulnerability in sanitize-html prior to version 2.17.4 allows bypassing the HTML sanitization mechanism. An attacker can place malicious content inside a disallowed `xmp` element, which under the default configuration (`disallowedTagsMode: 'discard'`) is transformed into live HTML or JavaScript, leading to stored XSS.
Risk Assessment
The risk for the organization includes the possibility of injecting a persistent XSS script into the application, which can result in user session theft, account takeover, or sensitive data leakage.
Recommendation
Immediately update the sanitize-html library to version 2.17.4 or later. If an update is not possible, change the default configuration to `disallowedTagsMode: 'escape'` or manually filter the `xmp` element.
Original NVD description (English source)
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.