CVE-2025-29771

MEDIUM

HtmlSanitizer < 2.0.3 - Cross-Site Scripting via ContentEditable InnerHTML Injection

Title source: llm
STIX 2.1

Description

HtmlSanitizer is a client-side HTML Sanitizer. Versions prior to 2.0.3 have a cross-site scripting vulnerability when the sanitizer is used with a `contentEditable` element to set the elements `innerHTML` to a sanitized string produced by the package. If the code is particularly crafted to abuse the code beautifier, that runs AFTER sanitation. The issue is patched in version 2.0.3.

References (2)

Core 2

Scores

CVSS v4 5.3
EPSS 0.0037
EPSS Percentile 29.2%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/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 no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
jitbit/htmlsanitizer 0 - 2.0.3npm
jitbit/HtmlSanitizer < 2.0.3
Published Mar 14, 2025
Tracked Since Feb 18, 2026