Answer in brief
CVE-2026-44990 records a Critical severity (CVSS 9.3) vulnerability in Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html`. The current sources do not mark it as known exploited. The current feed maps apostrophecms/sanitize-html (generic), sanitize-html (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps apostrophecms/sanitize-html (generic), sanitize-html (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| apostrophecms/sanitize-htmlgeneric | < 2.17.4 | Not reported |
| sanitize-htmlnpm | =2.17.3 | 2.17.4 |
Published upstream
Jun 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.