What is CVE-2026-32734?

CVE-2026-32734 is a high-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-03-31.

How severe is CVE-2026-32734?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Basercms

CVE-2026-32734

baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has DOM-based cross-site scripting in tag creation. This issue has been patched in version 5.2.3.

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (23.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001

Affected products

Basercms
Baserproject Basercms — versions < 5.2.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/baserproject/basercms/security/advisories/GHSA-677c-xv24-crgx (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-2026-32734?: CVE-2026-32734 is a high-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-03-31.
How severe is CVE-2026-32734?: High severity. CVSS v3 base score is 7.1 out of 10.