---
id: CVE-2026-96677
title: >-
  Apache Juneau: Cross-site scripting via unescaped request variables in
  HTML-doc chrome
summary: >-
  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 …
severity: critical
cvss: 10
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cvssSource: cna
cwe:
  - CWE-79
vendor: Apache Software Foundation
product: 'org.apache.juneau:juneau-marshall'
affected:
  - 'org.apache.juneau:juneau-marshall < 9.2.1'
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T11:54:38.096Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-96677'
references:
  - url: 'https://lists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6'
tags:
  - cve.org
ingestedAt: '2026-11-05T21:36:00.831Z'
---

## Overview

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.

## Affected

- `org.apache.juneau:juneau-marshall < 9.2.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.