CVE-2026-57311
MEDIUMUnrestricted Upload of File with Dangerous Type in Windu CMS
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Third Party Advisory third-party-advisory
https://cert.pl/posts/2026/07/CVE-2026-57309
Product product
https://windu.org
Scores
CVSS v4
5.3
EPSS
0.0037
EPSS Percentile
30.1%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-434
Status
published
Products (1)
JCD/Windu CMS
4.1
Published
Jul 20, 2026
Tracked Since
Jul 20, 2026