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Medium · 5.3 CVE-2026-113654 EUVD-2026-105182GHSA-x3q4-9hxx-gx8m

ApostropheCMS sanitize-html: nonTextTags discard region ends early on an implied close, letting <noscript> content render

Published Oct 20, 2026 · Updated Oct 28, 2026 · Assigned by GitHub_M

Description

ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Prior to sanitize-html 2.18.0, a non-default nonTextTags configuration that includes noscript can end its discard region early when htmlparser2 emits an implied ancestor close inside noscript. Because scripting-enabled browsers treat noscript content as raw text while the parser does not model that mode, content intended to remain inert can survive sanitization and render; the issue does not generalize to every default nonTextTags element. This issue is fixed in sanitize-html 2.18.0.

Affected products

VendorProductAffectedFixed
apostrophecms apostrophe < 4.33.0 —
apostrophecms sanitize-html < 2.18.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm sanitize-html < 2.18.0 2.18.0 GHSA-x3q4-9hxx-gx8m

References