CVE-2023-50564
Published: 14 December 2023
Summary
CVE-2023-50564 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Pluck-Cms Pluck. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 2.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-50564 is an arbitrary file upload vulnerability in Pluck-CMS version 4.7.18 that resides in the component /inc/modules_install.php. The flaw, tracked under CWE-434, permits an authenticated user to upload a specially crafted ZIP archive that results in execution of arbitrary code on the server. It carries a CVSS 3.1 base score of 8.8 reflecting network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.
An attacker who already possesses a low-privileged account can exploit the issue without user interaction by sending a malicious ZIP file through the affected module-installation endpoint, thereby achieving remote code execution on the underlying web server. The vulnerability therefore allows an authenticated adversary to fully compromise the CMS instance and any data or functionality it controls.
Public references consist of proof-of-concept material hosted on GitHub that demonstrates the upload and code-execution steps; no vendor advisory, patch information, or official mitigation guidance appears in the supplied sources. The associated EPSS score stands at 0.3522 with an identical recorded peak, indicating moderate but stable exploitation probability without a notable post-disclosure increase.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-55346
Vulnerability details
An arbitrary file upload vulnerability in the component /inc/modules_install.php of Pluck-CMS v4.7.18 allows attackers to execute arbitrary code via uploading a crafted ZIP file.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.