CVE-2026-57311 — Unrestricted Upload of File with Dangerous Type in Windu CMS

CVE-2026-57311

Unrestricted Upload of File with Dangerous Type in Windu CMS PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
JCD / Windu CMS	affected 4.1

CWE

CWE-434

References

https://cert.pl/posts/2026/07/CVE-2026-57309
https://windu.org

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.