CVE-2026-30880
baserCMS: OS command injection vulnerability in installer
CVE-2026-30880 is a critical vulnerability (CVSS 9.2) in Basercms, published March 31, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.07%, the 81st percentile. Fixed in baserproject/basercms 5.2.3.
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
baserCMS: OS command injection vulnerability in installer
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
- Record
CVE-2026-30880- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2026-17265
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
- Record
EUVD-2026-17265- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6hpg-8rx3-cwgv
baserCMS has OS command injection vulnerability in installer
baserCMS has an OS command injection vulnerability in the installer.
Target
baserCMS 5.2.2 and earlier versions
Vulnerability
If baserCMS is placed on a server but not installed, malicious commands may be executed.
Countermeasures
Update to the latest version of baserCMS
Please refer to the following page to reference for more information. https://basercms.net/security/JVN_54513170
Credits
REN XINGDIAN
- Record
GHSA-6hpg-8rx3-cwgv- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
- Record
CVE-2026-30880- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSV
baserCMS: OS command injection vulnerability in installer
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
- Record
CVE-2026-30880- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVGHSA-6hpg-8rx3-cwgv
baserCMS has OS command injection vulnerability in installer
baserCMS has an OS command injection vulnerability in the installer.
Target
baserCMS 5.2.2 and earlier versions
Vulnerability
If baserCMS is placed on a server but not installed, malicious commands may be executed.
Countermeasures
Update to the latest version of baserCMS
Please refer to the following page to reference for more information. https://basercms.net/security/JVN_54513170
Credits
REN XINGDIAN
- Record
GHSA-6hpg-8rx3-cwgv- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
baserproject/basercmsPackagist |
through 5.2.2 | 5.2.3 |
baserproject/basercmsPackagist |
before 5.2.3, plus listed versions 0.0.10.0.20.0.30.0.40.0.5 Show 45 moreShow less0.0.60.0.70.0.81.0.02.0.0-rc12.0.0-rc22.0.0-rc32.0.0-rc42.0.0-rc52.0.0-rc63.0.103.0.10.13.0.113.0.11.13.0.123.0.133.0.143.0.153.0.163.0.173.0.183.0.193.0.203.0.213.0.223.0.233.0.243.0.253.0.263.0.73.0.7.13.0.83.0.8.13.0.93.0.9.14.0.04.0.0-beta4.0.14.0.104.0.10.14.0.114.0.24.0.2.14.0.34.0.4 |
5.2.3 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-02 | created | CVE List, EUVD, GitHub Advisories, NVD, OSV |
References
github.com/baserproject/basercms/security/advisories/GHSA-6hpg-8rx3-cwgv
basercms.net/security/JVN_20837860
nvd.nist.gov/vuln/detail/CVE-2026-30880
Left out here: 105 versions. The JSON record has them.