Authenticated arbitrary file write via path traversal
Published May 11, 2026 · Updated May 11, 2026
Path traversal in Casdoor 2.328.0 and earlier allows remote authenticated users to write arbitrary host files through resource uploads. The upload handler concatenates attacker-controlled pathPrefix and fullFilePath values, and GetFullPath does not verify that the resolved destination remains under BaseDir. An authenticated session with storage-provider management and upload permissions is required; writes inherit the Casdoor process's filesystem access.
Summary
What happened
Path traversal in Casdoor 2.328.0 and earlier allows remote authenticated users to write arbitrary host files through resource uploads. The upload handler concatenates attacker-controlled pathPrefix and fullFilePath values, and GetFullPath does not verify that the resolved destination remains under BaseDir. An authenticated session with storage-provider management and upload permissions is required; writes inherit the Casdoor process's filesystem access.
The record
- CVE
- CVE-2026-6815
- Published
- May 11, 2026
- Updated
- May 11, 2026
- Vendor
- Casdoor
- Product
- Casdoor
- Classifications
- CWE-22, T1105
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 11, 2026CVE publishedPublication date reported by the CVE source.
- May 11, 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=0 <=v2.328.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- CVE-2026-6815 PoC/Exploitproof of concept · unverified
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Technologies
Your stack
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Your stack
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