CVE-2026-57311 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

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References

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

History

Mon, 20 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 20 Jul 2026 13:00:00 +0000

Type	Values Removed	Values Added
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.
Title		Unrestricted Upload of File with Dangerous Type in Windu CMS
Weaknesses		CWE-434
References		https://cert.pl/posts/2026/07/CVE-2026-57309 https://windu.org
Metrics		cvssV4_0 `{'score': 5.3, 'vector': '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'}`

MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published: 2026-07-20T12:53:08.554Z

Updated: 2026-07-20T13:46:09.348Z

Reserved: 2026-06-24T12:12:42.195Z

Link: CVE-2026-57311

Vulnrichment

Updated: 2026-07-20T13:46:03.170Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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