CVE-2021-47936

OpenCATS 0.9.4 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary commands by uploading malicious PHP files disguised as resume attachments. Attackers can upload PHP payloads through the careers job application endpoint and execute system commands via POST requests to the uploaded file in the upload directory.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/opencats/OpenCATS
https://www.exploit-db.com/exploits/50585
https://www.opencats.org/
https://www.vulncheck.com/advisories/opencats-remote-code-execution-via-resume-upload

Configurations

No configuration.

History

24 Jul 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) OpenCATS 0.9.4 contiene una vulnerabilidad de ejecución remota de código que permite a atacantes no autenticados ejecutar comandos arbitrarios mediante la carga de archivos PHP maliciosos disfrazados como adjuntos de currículum. Los atacantes pueden cargar cargas útiles PHP a través del punto final de solicitud de empleo de carreras y ejecutar comandos del sistema a través de solicitudes POST al archivo cargado en el directorio de carga.

10 May 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-10 13:16

Updated : 2026-07-25 10:10

NVD link : CVE-2021-47936

Mitre link : CVE-2021-47936

CVE.ORG link : CVE-2021-47936

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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