CVE-2026-21861
CVE-2026-21861 · baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 9.1 · Critical · EPSS 2.3% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
basercms
- Versions
- < 5.2.3: Affected
No fix published
baserproject/basercms Packagist
- Versions
- 0.0.1
- 0.0.2
- 0.0.3
- 0.0.4
- 0.0.5
- 0.0.6
- 0.0.7
- 0.0.8
- 1.0.0
- 2.0.0-rc1
- 2.0.0-rc2
- 2.0.0-rc3
- 2.0.0-rc4
- 2.0.0-rc5
- 2.0.0-rc6
- 3.0.10
- 3.0.10.1
- 3.0.11
- 3.0.11.1
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 3.0.19
- 3.0.20
- 3.0.21
- 3.0.22
- 3.0.23
- 3.0.24
- 3.0.25
- 3.0.26
- 3.0.7
- 3.0.7.1
- 3.0.8
- 3.0.8.1
- 3.0.9
- 3.0.9.1
- 4.0.0
- 4.0.0-beta
- 4.0.1
- 4.0.10
- 4.0.10.1
- 4.0.11
- 4.0.2
- 4.0.2.1
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.5.1
- 4.0.5.2
- 4.0.6
- 4.0.7
- 4.0.8
- 4.0.9
- 4.1.0
- 4.1.0.1
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.7
- 4.1.8
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 4.2.5
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.3.6
- 4.3.7
- 4.3.7.1
- 4.4.0
- 4.4.1
- 4.4.1.1
- 4.4.2
- 4.4.2.1
- 4.4.3
- 4.4.4
- 4.4.5
- 4.4.6
- 4.4.7
- 4.4.8
- 4.5.0
- 4.5.1
- 4.5.2
- 4.5.3
- 4.5.4
- 4.5.5
- 4.5.6
- 4.6.0
- 4.6.1
- 4.6.1.1
- 4.6.2
- 4.6.3
- 4.7.0
- 4.7.2
- 4.7.3
- 4.7.5
- 4.7.6
- 4.7.7
- 4.7.8
- 4.8.0
- 4.8.1
- 4.8.2
- 4.8.3
- 5.0.0
- 5.0.0-beta1
- 5.0.0-beta2
- 5.0.0-beta3
- 5.0.0-beta4
- 5.0.1
- 5.0.10
- 5.0.11
- 5.0.12
- 5.0.14
- 5.0.15
- 5.0.16
- 5.0.17
- 5.0.18
- 5.0.19
- 5.0.2
- 5.0.20
- 5.0.21
- 5.0.3
- 5.0.4
- 5.0.5
- 5.0.6
- 5.0.7
- 5.0.8
- 5.0.9
- 5.1.0
- 5.1.1
- 5.1.10
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
- 5.1.7
- 5.1.8
- 5.1.9
- 5.2.0
- 5.2.1
- 5.2.2
- Affected ranges
- ECOSYSTEM: < 5.2.3
Update to 5.2.3