What is CVE-2026-27697?

CVE-2026-27697 is a critical-severity vulnerability in Basercms, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-03-31.

How severe is CVE-2026-27697?

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

SQL Injection in Basercms

CVE-2026-27697

baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a SQL injection vulnerability in blog posts. This issue has been patched in version 5.2.3.

Vulnerability class: SQL Injection

Published 2026-03-31 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.005 (43.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Basercms
Baserproject Basercms — versions < 5.2.3

Weakness classification (CWE)

CWE-89 — SQL Injection

References

github.com/baserproject/basercms/security/advisories/GHSA-vh89-rjph-2g7p (Vendor Advisory)
basercms.net/security/JVN_20837860 (Vendor Advisory)
github.com/baserproject/basercms/releases/tag/5.2.3 (Release Notes)

Frequently asked questions

What is CVE-2026-27697?: CVE-2026-27697 is a critical-severity vulnerability in Basercms, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-03-31.
How severe is CVE-2026-27697?: Critical severity. CVSS v3 base score is 9.8 out of 10.