Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-g9gq-3pfx-2gw2

OWASP Java HTML Sanitizer is vulnerable to XSS via noscript tag and improper style tag sanitization

CVSS 8.6 HighEPSS 0.0029 · 21st percentile

Published by the GitHub Advisory Database at 25 Nov 2025, 22:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizerMaven>=20240325.1, <20260101.120260101.1
Identifiers
GHSA-g9gq-3pfx-2gw2 · CVE-2025-66021
Weakness (CWE)
CWE-79
Tags
Published
25 Nov 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Maven package com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizer versions 20240325.1 up to but not including 20260101.1 is affected. The issue arises only when a policy built with HtmlPolicyBuilder allows both noscript and style tags, with allowTextIn set for style, and the sanitized output is then rendered in a browser, which can let crafted script run. Upgrade to version 20260101.1, which is the listed fix. The source gives few details about the exact conditions beyond this.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.6 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0029, the 21st percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.