What is CVE-2026-45270?

CVE-2026-45270 is a high-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-07-20.

How severe is CVE-2026-45270?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Ci4-cms-erp Ci4ms

CVE-2026-45270

CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the `Pages` backend module registers the `html_purify` validation rule on language-keyed page content but persists the raw, un-purified POST valu…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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-2026-45270?: CVE-2026-45270 is a high-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-07-20.
How severe is CVE-2026-45270?: High severity. CVSS v3 base score is 8.7 out of 10.