PT-2026-39511 · Opencats · Opencats

Published 2026-05-10 · Updated 2026-05-10 · CVE-2021-47936

Mitre

CVSS v3.1

9.8

Critical

Base vector

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

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.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2021-47936

Affected Products

Opencats

References · 5

• 🔥 https://exploit-db.com/exploits/50585 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47936 · Security Note
• https://github.com/opencats/OpenCATS · Note
• https://opencats.org · Note
• https://vulncheck.com/advisories/opencats-remote-code-execution-via-resume-upload · Note