Badaso CMS file upload vulnerability
An arbitrary code execution vulnerability in Badaso CMS 2.9.11. The Media Manager allows authenticated users to upload files containing embedded PHP code via the file-upload endpoint, bypassing content-type validation. When such a file is accessed via its URL, the server executes the PHP payload, enabling an attacker to run arbitrary system commands and achieve full compromise of the underlying host. This has been demonstrated by embedding a backdoor within a PDF and renaming it with a .php extension.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | badaso/core | <= 2.9.11 | no fix |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P- Weakness (CWE)
CWE-434- Platform
- Composer
- Package
badaso/core- Disclosed
- 26.08.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-gqp9-jh35-439m - CC BY 4.0
Vulnerability history: badaso/core
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 10.2022 08.2025
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
Disclosures per year
- 2022: 2
- 2023: 0
- 2024: 0
- 2025: 1
- 2026: 0
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Badaso CMS file upload vulnerability this entry
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