What is CVE-2026-45138?

CVE-2026-45138 is a medium-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-20.

How severe is CVE-2026-45138?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Ci4-cms-erp Ci4ms

CVE-2026-45138

CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the custom `html_purify` validation rule used to sanitize blog post bodies relies on by-reference mutation (`?string &$str`), but CodeIgniter 4's…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (4.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Ci4-cms-erp Ci4ms — versions < 0.31.9.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-45138?: CVE-2026-45138 is a medium-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-20.
How severe is CVE-2026-45138?: Medium severity. CVSS v3 base score is 5.4 out of 10.