PT-2026-61589 · Windu Cms · Windu Cms

Jakub Lipiński + 2 · CVE-2026-57311 · Published 2026-07-20 · Updated 2026-07-20

Positive Technologies (AI Summary)

CVSS v4.0

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Windu CMS version 4.1

Description An authenticated attacker can upload arbitrary files, including PHP scripts, because the system does not validate the types of uploaded files. This flaw can lead to Remote Code Execution (RCE), which allows an attacker to execute arbitrary commands on the server. There have been reports of elevated activities targeting this software.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2026-57311

Affected Products

Windu Cms

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-57311 · Security Note
• https://twitter.com/vuldb/status/2079339540196786449 · Twitter Post
• https://cert.pl/posts/2026/07/CVE-2026-57309 · Note
• https://windu.org · Note