What is CVE-2026-30880?

CVE-2026-30880 is a critical-severity vulnerability in Basercms, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-31.

How severe is CVE-2026-30880?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Basercms

CVE-2026-30880

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.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.020 (79.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Basercms
Baserproject Basercms — versions < 5.2.3

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-30880?: CVE-2026-30880 is a critical-severity vulnerability in Basercms, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-31.
How severe is CVE-2026-30880?: Critical severity. CVSS v3 base score is 9.8 out of 10.