CVE-2025-52561

MEDIUM

HTMLSanitizer.jl < 0.2.1 - Cross-Site Scripting via Style Tag Whitelist

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v4 6.9
EPSS 0.0071
EPSS Percentile 49.2%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
JuliaComputing/HTMLSanitizer.jl < 0.2.1
Published Jun 23, 2025
Tracked Since Feb 18, 2026