https://seclists.org/oss-sec/2026/q2/416: CVE-2026-42509: Apache Wicket: crafted strings can bak out of the JavaScript sequence
Published May 5, 2026
·Updated
Affected Software
1 affected component
Apache wicket>=8.0.0<=8.17.0, >=9.0.0<=9.22.0, >=10.0.0<=10.8.0
Frequently Asked Questions
1
What is the severity of CVE-2026-42509?
The severity of CVE-2026-42509 is classified as important.
2
Which versions of Apache Wicket are affected by CVE-2026-42509?
CVE-2026-42509 affects Apache Wicket versions 8.0.0 through 8.17.0, 9.0.0 through 9.22.0, and 10.0.0 through 10.8.0.
3
What type of vulnerability is CVE-2026-42509?
CVE-2026-42509 is a Cross-site Scripting (XSS) vulnerability due to improper neutralization of input during web page generation.
4
How do I fix CVE-2026-42509?
To fix CVE-2026-42509, upgrade to a patched version of Apache Wicket that addresses this vulnerability.
5
What are the consequences of CVE-2026-42509 if exploited?
If exploited, CVE-2026-42509 can allow an attacker to execute arbitrary JavaScript in the context of a user's browser.