CVE-2026-34560CWE-79

CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

Critical · published April 1, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application renders user-controlled input unsafely within the logs interface. If any stored XSS payload exists within logged data, it is rendered without proper output encoding. This issue becomes a Blind XSS scenario because the attacker does not see immediate execution. Instead, the payload is stored within application logs and only executes later when an administrator views the logs page. This issue has been patched in version 0.31.0.0.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00462 · 39.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-01T21:21Z
EPSS history
Timeline
  • 01 APR 21:21Z
    CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS
    cvelistv5