CVE-2026-96677 Apache Juneau: Cross-site scripting via unescaped request variables in HTML-doc chrome

CriticalCVSS 10.0

Published: 2026-11-05 13:54
Updated: 2026-11-10 21:03
Exploit status: No public exploit known

Description

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 products

Product	Affected versions	Fixed in
org.apache.juneau/juneau-marshall(Maven)	< 9.2.1	9.2.1

References

lists.apache.org vendor-advisory

CVSS v4.0

10.0 Critical

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

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable System Confidentiality: High
Vulnerable System Integrity: High
Vulnerable System Availability: High
Subsequent System Confidentiality: High
Subsequent System Integrity: High
Subsequent System Availability: High

Weakness & likelihood

EPSS (exploitation probability, 30 days): Not available
CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.