Apache Juneau up to 9.2.0 cross site scripting

Summaryinfo

A vulnerability was found in Apache Juneau up to 9.2.0. It has been rated as problematic. This affects an unknown function. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-96677. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apache Juneau up to 9.2.0. This issue affects an unknown function. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Juneau. HTML document serialization does not HTML-encode variable substitutions in the page chrome (header, nav, aside, footer and similar fields). Applications whose chrome includes request-derived variables, such as request headers, form data or path values, reflect those values unencoded, allowing cross-site scripting. The default chrome does not use request variables, so only applications that add them are affected. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.

The advisory is shared at lists.apache.org. The identification of this vulnerability is CVE-2026-96677 since 09/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/05/2026). MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 9.2.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Apache

Name

• Juneau

Version

• 9.0
• 9.1
• 9.2.0

License

• open-source

Website

• Vendor: https://www.apache.org/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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