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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.

PUBLISHED Reserved 2026-05-04 | Published 2026-05-06 | Updated 2026-05-06 | Assigner apache

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
unaffected

10.0.0 (semver)
affected

9.0.0 (semver)
affected

8.0.0 (semver)
affected

References

www.openwall.com/lists/oss-security/2026/05/06/4

github.com/apache/wicket/pull/1432 patch

lists.apache.org/thread/xp2jrdk6ppv1zcmxb4w1mk2lg1dw3hbr vendor-advisory

cve.org (CVE-2026-43975)

nvd.nist.gov (CVE-2026-43975)

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