CVE-2025-2031
Published: 06 March 2025
Summary
CVE-2025-2031 is a medium-severity Improper Access Control (CWE-284) vulnerability in 1000Mz Chestnutcms. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-2031 is a critical vulnerability in ChestnutCMS versions up to 1.5.2, affecting the uploadFile function in the /dev-api/cms/file/upload endpoint. By manipulating the 'file' argument, attackers can achieve unrestricted file upload. The issue maps to CWEs-284 (Improper Access Control), CWE-434 (Unrestricted Upload of File with Dangerous Type), and CWE-79 (Cross-site Scripting). It carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and was published on 2025-03-06.
The vulnerability enables remote exploitation by low-privileged users over the network with low attack complexity and no user interaction required. Attackers can upload arbitrary files, potentially compromising confidentiality, integrity, and availability at a low impact level due to the scope remaining unchanged.
Advisories and further details are documented in references such as https://github.com/IceFoxH/VULN/issues/6 and VulDB entries (https://vuldb.com/?ctiid.298773, https://vuldb.com/?id.298773, https://vuldb.com/?submit.512029). The exploit has been publicly disclosed and may be actively used.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-6210
Vulnerability details
A vulnerability classified as critical has been found in ChestnutCMS up to 1.5.2. This affects the function uploadFile of the file /dev-api/cms/file/upload. The manipulation of the argument file leads to unrestricted upload. It is possible to initiate the attack remotely.…
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The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload vulnerability (CVE-2025-2031) in public-facing ChestnutCMS enables exploitation of public-facing applications (T1190), web shell deployment via uploaded malicious files (T1505.003), and staging tools (T1608.002) as noted in advisories.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents unrestricted file uploads by validating the 'file' argument for proper type, size, content, and dangerous extensions in the uploadFile function.
Restricts the types and amounts of information that can be uploaded via the /dev-api/cms/file/upload endpoint to only authorized and safe files.
Requires timely identification, reporting, and correction of the specific flaw in ChestnutCMS uploadFile function enabling unrestricted uploads.