Out-of-root file operations via prefix-only containment
Published Aug 13, 2026 · Updated Aug 13, 2026
Path traversal in WsgiDAV 4.3.3 and earlier allows remote attackers to read, write, or delete files outside a filesystem share root. FilesystemProvider._loc_to_file_path() accepts an absolute candidate path when its string merely starts with the configured root, so a similarly prefixed sibling passes containment. Exploitation requires an accepted WebDAV request, a suitably named neighboring path, and WsgiDAV process permissions; the share can be anonymous or authenticated.
Summary
What happened
Path traversal in WsgiDAV 4.3.3 and earlier allows remote attackers to read, write, or delete files outside a filesystem share root. FilesystemProvider._loc_to_file_path() accepts an absolute candidate path when its string merely starts with the configured root, so a similarly prefixed sibling passes containment. Exploitation requires an accepted WebDAV request, a suitably named neighboring path, and WsgiDAV process permissions; the share can be anonymous or authenticated.
The record
- CVE
- CVE-2026-48099
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- Martin Wendt
- Product
- WsgiDAV
- Classifications
- CWE-22
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 4.3.4
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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