Cross-site scripting in Apache Wicket - CVE-2026-76985
Published: August 31, 2026
Vulnerability identifier: #VU146322
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-2026-76985
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 Palette option rendering in org.apache.wicket.extensions.markup.html.form.palette.component.AbstractOptions when writing additional attributes into
Only applications that override Palette.getAdditionalAttributesForChoices, Palette.getAdditionalAttributesForSelection, or AbstractOptions.getAdditionalAttributes and return attacker-influenced data are affected.
Affected software
Apache Wicket
How to mitigate CVE-2026-76985
Install security update from vendor's website.
Apache Wicket - addressed in versions 8.19.0, 9.24.0, 10.11.0