Arbitrary file read and deletion via path traversal
Published May 16, 2026 · Updated May 16, 2026
Path traversal in Supsystic Backup 2.3.9 allows attackers to read or delete arbitrary server files through admin.php requests. The download handler resolves attacker-supplied traversal paths without confinement, while removeAction trusts its filename parameter for deletion. No authentication or user interaction is required according to the CNA record; filesystem permissions bound which files can be disclosed or removed.
Summary
What happened
Path traversal in Supsystic Backup 2.3.9 allows attackers to read or delete arbitrary server files through admin.php requests. The download handler resolves attacker-supplied traversal paths without confinement, while removeAction trusts its filename parameter for deletion. No authentication or user interaction is required according to the CNA record; filesystem permissions bound which files can be disclosed or removed.
The record
- CVE
- CVE-2020-37246
- Published
- May 16, 2026
- Updated
- May 16, 2026
- Vendor
- Supsystic
- Product
- Backup by Supsystic
- Classifications
- CWE-98, T1005
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 16, 2026CVE publishedPublication date reported by the CVE source.
- May 16, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.3.9
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
- Exploit-DB 49545 Supsystic Backup local file inclusion proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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