NVD CRITICAL: CVE-2021-47936 — OpenCATS 0.9.4 contains a remote code execution vulnerability that allows unauth...

Sunday, May 10, 2026 at 01:16 PM UTC·Source: NIST NVD

Updated: Tuesday, May 12, 2026 at 01:00 PM UTC

Executive Summary

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.

Analysis

Indicators of Compromise (1)

CVE (1)

CVE-2021-47936

NVD MITRE CVE

Source Attribution

Originally published by NIST NVD on May 10, 2026. Verified by: NIST.

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