Apache Wicket <10.9.0 File Upload Path Traversal via unsanitized uploadFieldId
CVE-2026-43975 Published on May 6, 2026
Apache Wicket: Possible malicious path traversal in FolderUploadsFileManager
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.
Vulnerability Analysis
CVE-2026-43975 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-43975 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-43975
Want to know whenever a new CVE is published for Apache Wicket? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache Wicket:- Version 10.0.0, <= 10.8.0 is affected.
- Version 9.0.0, <= 9.22.0 is affected.
- Version 8.0.0, <= 8.17 is affected.