Arbitrary file upload in 1000mz Chestnutcms
CVE-2025-15009
A flaw has been found in liweiyi ChestnutCMS up to 1.5.8. This vulnerability affects the function FilenameUtils.getExtension of the file /dev-api/common/upload of the component Filename Handler. Executing manipulation of the argument File can lead to unrestricted upload. The attack may be launched remotely. The exploit has been published and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (26.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- 1000mz Chestnutcms
- Liweiyi Chestnutcms — versions 1.5.0, 1.5.1, 1.5.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md (related, Exploit, Third Party Advisory)
- github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2025-15009?
- CVE-2025-15009 is a medium-severity vulnerability in 1000mz Chestnutcms, classified under Improper Access Control. CVSS score: 6.3/10. Published 2025-12-22.
- How severe is CVE-2025-15009?
- Medium severity. CVSS v3 base score is 6.3 out of 10.