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: wicket
References3
- lists.apache.org/thread/xp2jrdk6ppv1zcmxb4w1mk2lg1dw3hbr Vendor Advisory
- github.com/apache/wicket/pull/1432 Issue TrackingPatch
- www.openwall.com/lists/oss-security/2026/05/06/4 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - EPSS — exploit probability
- 1% percentile: 55 · as of 13 November 2026
- CWE
- CWE-22
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