CVE-2026-42509

Name: CVE-2026-42509
Creator: NVD / NIST
Published: 2026-05-06T10:16:20.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2026-42509 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Wicket. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, 9.0.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Wicket. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, 9.0.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.36%

27.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Apache	Wicket	>= 8.0.0, <= 8.17.0
Apache	Wicket	>= 9.0.0, <= 9.22.0
Apache	Wicket	>= 10.0.0, < 10.9.0

References

https://lists.apache.org/thread/52nrq4tt07gxz4r6sj5gyocz5s6bprjpVendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/06/2Mailing List, Third Party Advisory

Timeline

Published: May 6, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-42509?

How severe is CVE-2026-42509?

CVE-2026-42509 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42509?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42509?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST