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High severityNVD Advisory· Published Nov 26, 2025· Updated Nov 26, 2025

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

CVE-2025-66021

Description

OWASP Java HTML Sanitizer is a configureable HTML Sanitizer written in Java, allowing inclusion of HTML authored by third-parties in web applications while protecting against XSS. In version 20240325.1, OWASP java html sanitizer is vulnerable to XSS if HtmlPolicyBuilder allows noscript and style tags with allowTextIn inside the style tag. This could lead to XSS if the payload is crafted in such a way that it does not sanitise the CSS and allows tags which is not mentioned in HTML policy. At time of publication no known patch is available.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizerMaven
>= 20240325.1, < 20260101.120260101.1

Affected products

23

Patches

Vulnerability mechanics

References

7

News mentions

0

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