CVE-2025-66021

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

O

WASP 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.

References

Link	Resource
https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2	Exploit Vendor Advisory
https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:owasp:java_html_sanitizer:20240325.1:*:*:*:*:*:*:*

History

30 Dec 2025, 16:34

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
CPE		cpe:2.3:a:owasp:java_html_sanitizer:20240325.1:::::::*
References	~~() https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2 -~~	() https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2 - Exploit, Vendor Advisory
First Time		Owasp java Html Sanitizer Owasp

26 Nov 2025, 16:15

Type	Values Removed	Values Added
References	~~() https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2 -~~	() https://github.com/OWASP/java-html-sanitizer/security/advisories/GHSA-g9gq-3pfx-2gw2 -

26 Nov 2025, 02:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-11-26 02:15

Updated : 2025-12-30 16:34

NVD link : CVE-2025-66021

Mitre link : CVE-2025-66021

CVE.ORG link : CVE-2025-66021

JSON object : View

Products Affected

java_html_sanitizer

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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