Arbitrary file upload in Kuangstudy Kuangsimplebbs
CVE-2025-3830
A vulnerability was found in kuangstudy KuangSimpleBBS 1.0. It has been declared as critical. Affected by this vulnerability is the function fileUpload of the file src/main/java/com/kuang/controller/QuestionController.java. The manipulation of the argument editormd-image-file leads to unrestricted upload. The attack can be launched remotely. The exploit has been disclosed to the public 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: 0.005 (40.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Kuangstudy Kuangsimplebbs — versions 1.0
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/caigo8/CVE-md/blob/main/KuangSimpeBBS/任意文件上传.md (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-3830?
- CVE-2025-3830 is a medium-severity vulnerability in Kuangstudy Kuangsimplebbs, classified under Improper Access Control. CVSS score: 6.3/10. Published 2025-04-20.
- How severe is CVE-2025-3830?
- Medium severity. CVSS v3 base score is 6.3 out of 10.