CVE-2022-38296
Published: 12 September 2022
Summary
CVE-2022-38296 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Cuppacms Cuppacms. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 1.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Cuppa CMS version 1.0 contains an arbitrary file upload vulnerability in its File Manager component, tracked as CVE-2022-38296 and assigned CWE-434. The flaw permits unauthenticated remote attackers to upload arbitrary files, resulting in a CVSS 3.1 base score of 9.8 reflecting full impact on confidentiality, integrity, and availability over the network without any required privileges or user interaction.
An attacker can exploit the issue by sending a crafted upload request directly to the File Manager endpoint, enabling them to place malicious files such as web shells on the server and subsequently execute arbitrary code or take full control of the affected installation.
The associated EPSS score rose sharply from low values to a peak of 0.8210 on 2025-12-11 before receding to the current 0.6092, indicating that exploitation interest emerged after public disclosure and that the vulnerability warrants renewed attention. The primary reference points to a GitHub issue in the CuppaCMS repository that documents the flaw.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-40888
Vulnerability details
Cuppa CMS v1.0 was discovered to contain an arbitrary file upload vulnerability via the File Manager.
- 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.