Cross-site scripting in Apache Wicket - CVE-2026-76983
Published: August 31, 2026
Vulnerability identifier: #VU146324
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-76983
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary script code in the victim's browser.
The vulnerability exists due to improper neutralization of input during web page generation in AutoLabelTextResolver when rendering a form component label supplied through FormComponent.setLabel(IModel). A remote attacker can supply crafted label content to execute arbitrary script code in the victim's browser.
An application is affected only if a form component label contains data that can be influenced by an attacker, whether from a request or from stored data.
Affected software
Apache Wicket
How to mitigate CVE-2026-76983
Install security update from vendor's website.
Apache Wicket - addressed in versions 8.19.0, 9.24.0, 10.11.0