CVE-2026-76984: Apache Wicket: XSS in MetaDataHeaderItem via addTagAttribute

<p>Posted by Emond Papegaaij on Aug 31</p>Severity: moderate <br /> <br /> Affected versions:<br /> <br /> - Apache Wicket (org.apache.wicket:wicket-core) 8.0.0 through 8.18.0<br /> - Apache Wicket (org.apache.wicket:wicket-core) 9.0.0 through 9.23.0<br /> - Apache Wicket (org.apache.wicket:wicket-core) 10.0.0 through 10.10.0<br /> <br /> Description:<br /> <br /> Improper neutralization of input