CVE-2021-47936
OpenCATS 0.9.4 Remote Code Execution via Resume Upload
- State
- Published
- Severity
- 9.3 Critical
- Published
- May 10, 2026
- Updated
- May 11, 2026
- Reserved
- Feb 1, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
OpenCATSOpencats |
|
References
- ExploitDB-50585exploit
- Official Product Homepageproduct
- Product Referenceproduct
- VulnCheck Advisory: OpenCATS 0.9.4 Remote Code Execution via Resume Uploadthird-party-advisory
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