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OpenAdvisories
Medium · 6.9 CVE-2025-52561 EUVD-2025-28447

HTMLSanitizer.jl Possible XSS

Published Jun 23, 2025 · Updated Jun 24, 2025 · Assigned by GitHub_M

Description

HTMLSanitizer.jl is a Whitelist-based HTML sanitizer. Prior to version 0.2.1, when adding the style tag to the whitelist, content inside the tag is incorrectly unescaped, and closing tags injected as content are interpreted as real HTML, enabling tag injection and JavaScript execution. This could result in possible cross-site scripting (XSS) in any HTML that is sanitized with this library. This issue has been patched in version 0.2.1. A workaround involves adding the math and svg elements to the whitelist manually.

Affected products

VendorProductAffectedFixed
JuliaComputing HTMLSanitizer.jl < 0.2.1 —

References