CVE-2026-21861
baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
- State
- Published
- Severity
- 9.1 Critical
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Reserved
- Jan 5, 2026
Description
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS contains an OS command injection vulnerability in the core update functionality. An authenticated administrator can execute arbitrary OS commands on the server due to improper handling of user-controlled input that is directly passed to exec() without sufficient validation or escaping. This issue has been patched in version 5.2.3.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
basercmsbaserproject |
|
References
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