Bug 2556346 (CVE-2026-113661)

Summary: CVE-2026-113661 sanitize-html: sanitize-html: Cross-site scripting via unsafe meta refresh content attributes
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in sanitize-html. In configurations where meta refresh elements and their attributes are permitted, the sanitizer fails to properly filter unsafe scripts or redirect destinations within the refresh content value. A remote attacker could exploit this vulnerability by submitting crafted HTML input, potentially leading to cross-site scripting (XSS) or unauthorized redirection in a user's browser.
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Description OSIDB Bzimport 2026-10-20 17:32:25 UTC
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 configuration that allows meta refresh elements and their http-equiv and content attributes can retain unsafe script or redirect destinations embedded in the refresh content value. This issue is fixed in sanitize-html 2.18.0.