CVE-2021-47936 - CVE House
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Status published Critical CVE-2021-47936

OpenCATS 0.9.4 Remote Code Execution via Resume Upload

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Nicholas Ferreira - https://github.com/Nickguitar

Affected Vendor

Affected Software

OpenCATS
Vulnerable Versions:
0

Timeline

Official Publish: May 10th, 2026
Last Modified: May 11th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)