Authenticated file deletion via traversal path
Published Mar 12, 2026 · Updated Mar 12, 2026
Path traversal in ProjectSend r1945 allows remote authenticated users to delete server files through the orphan-file handler. The delete action in import-orphans.php appends each attacker-controlled files[] value to UPLOADED_FILES_DIR and passes the result to delete_file_from_disk without rejecting traversal segments. Administrative privileges are required, and deletion is limited to files writable by the web-service account, potentially disrupting service data.
Summary
What happened
Path traversal in ProjectSend r1945 allows remote authenticated users to delete server files through the orphan-file handler. The delete action in import-orphans.php appends each attacker-controlled files[] value to UPLOADED_FILES_DIR and passes the result to delete_file_from_disk without rejecting traversal segments. Administrative privileges are required, and deletion is limited to files writable by the web-service account, potentially disrupting service data.
The record
- CVE
- CVE-2026-4044
- Published
- Mar 12, 2026
- Updated
- Mar 12, 2026
- Vendor
- ProjectSend
- Product
- ProjectSend
- Classifications
- CWE-22, T1485
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Mar 12, 2026CVE publishedPublication date reported by the CVE source.
- Mar 12, 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=r1945
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- ProjectSend import-orphans.php traversal proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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