CVE-2026-57311
Unrestricted Upload of File with Dangerous Type in Windu CMS
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 20, 2026
- Updated
- Jul 29, 2026
- Reserved
- Jun 24, 2026
Description
Windu CMS does not validate types of uploaded files. An authenticated attacker can upload arbitrary files, including PHP. This can lead to Remote Code Execution.
Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 4.1 but may also affect other versions.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L | CERT-PL |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
Windu CMSJCD |
|
References
- https://cert.pl/posts/2026/07/CVE-2026-57309third-party-advisory
- https://windu.org/product
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