CVE-2025-66021 — Cross-site Scripting in Java-html-sanitizer

CWE-79 — Cross-site Scripting5 documents5 sources

Severity

8.6HIGHNVD

EPSS

0.0%

top 94.50%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Owasp Java-html-sanitizer Owasp Java Html Sanitizer

Timeline

PublishedNov 26

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…

CVSS vector

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

Affected Packages2 packages

▶CVEListV5owasp/java-html-sanitizer= 20240325.1

▶NVDowasp/java_html_sanitizer20240325.1

🔴Vulnerability Details

CVEList

OWASP Java HTML Sanitizer is vulnerable to XSS via noscript tag and improper style tag sanitization↗2025-11-26

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GHSA

OWASP Java HTML Sanitizer is vulnerable to XSS via noscript tag and improper style tag sanitization↗2025-11-25

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OSV

OWASP Java HTML Sanitizer is vulnerable to XSS via noscript tag and improper style tag sanitization↗2025-11-25

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📋Vendor Advisories

Red Hat

com.googlecode.owasp-java-html-sanitizer/owasp-java-html-sanitizer: OWASP Java HTML Sanitizer vulnerable to XSS↗2025-11-26

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