CVE-2021-47936

CriticalCVSS 9.8/10Last modified Oct 6, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-306

Affected software

No affected versions have been published.

Timeline

Published
May 10, 2026
Last modified
Oct 6, 2026
NVD status
Deferred

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CVE-2021-47936: Critical severity, CVSS 9.8 | Vulnix