CVE-2026-43975
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Apache Wicket
PublishedMay 6, 2026
First seenMay 6, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- apache wicket10.9.0 or later
- org.apache.wicket:wicket-core10.9.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache wicket | 8.0.0 ≤ v ≤ 8.17.0, 9.0.0 ≤ v ≤ 9.22.0, 10.0.0 ≤ v < 10.9.0 | 10.9.0 |
| org.apache.wicket:wicket-coreMaven | 8.0.0-M1 ≤ v ≤ 8.17.0, 9.0.0-M1 ≤ v ≤ 9.22.0, 10.0.0-M1 ≤ v < 10.9.0 | 10.9.0 |
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