CVE-2023-39681
Published: 05 September 2023
Summary
CVE-2023-39681 is a critical-severity Code Injection (CWE-94) vulnerability in Cuppacms Cuppacms. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 9.3% 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 is affected by a remote code execution vulnerability that stems from improper handling of the email_outgoing parameter in Configuration.php. The flaw is a code-injection issue tracked as CWE-94 and is reachable over the network without authentication, resulting in a CVSS 3.1 base score of 9.8.
An unauthenticated attacker can supply a crafted payload to the vulnerable parameter and obtain arbitrary command execution on the server. Successful exploitation grants full control over confidentiality, integrity, and availability of the affected installation.
Public proof-of-concept code demonstrating the attack has been published on GitHub, but the supplied references contain no official vendor advisory or patch information. The associated EPSS score has remained flat at 0.0578 with no material rise since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-43382
Vulnerability details
Cuppa CMS v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the email_outgoing parameter at /Configuration.php. This vulnerability is triggered via a crafted payload.
- 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.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.