What is CVE-2026-30879?

CVE-2026-30879 is a medium-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-31.

How severe is CVE-2026-30879?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Basercms

CVE-2026-30879

baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Basercms
Baserproject Basercms — versions < 5.2.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

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-2026-30879?: CVE-2026-30879 is a medium-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-31.
How severe is CVE-2026-30879?: Medium severity. CVSS v3 base score is 6.1 out of 10.