Arbitrary file upload in Monstra Cms
CVE-2025-69906
Monstra CMS v3.0.4 contains an arbitrary file upload vulnerability in the Files Manager plugin. The application relies on blacklist-based file extension validation and stores uploaded files directly in a web-accessible directory. Under typical server configurations, this can allow an attacker to upload files that are interpreted as executable code, resulting in remote code execution.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Monstra Cms — versions 3.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/monstra-cms/monstra/tree/master/plugins/box/filesmanager (Exploit)
- github.com/cypherdavy/CVE-2025-69906-Monstra-CMS-3.0.4-Arbitrary-File-Upload-to… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-69906?
- CVE-2025-69906 is a high-severity vulnerability in Monstra Cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-02-05.
- How severe is CVE-2025-69906?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-69906 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.