What’s Vulnerable › Vulnerabilities

CVE-2026-43975: Apache Wicket: Possible malicious path traversal in FolderUploadsFileManager

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-10-26
• Weakness: CWE-22

Description

FolderUploadsFileManager in Apache Wicket does not validate or sanitize the uploadFieldId parameter or the clientFileName before constructing file paths, allowing an unauthenticated attacker to write arbitrary files outside the intended upload directory or read files from arbitrary locations on the server. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, from 9.0.0 through 9.22.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache Wicket: from 8.0.0 through 8.17.0; from 9.0.0 through 9.22.0; from 10.0.0 before 10.9.0 — fixed in 10.9.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Wicket 10.9.0. Check the vendor advisory for mitigations.

References

• https://github.com/apache/wicket/pull/1432
• https://lists.apache.org/thread/xp2jrdk6ppv1zcmxb4w1mk2lg1dw3hbr
• http://www.openwall.com/lists/oss-security/2026/05/06/4

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