CVE-2026-34562

CI4MS: System Settings (Company Information) Full Platform Compromise & Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

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 fails to properly sanitize user-controlled input within System Settings – Company Information. Several administrative configuration fields accept attacker-controlled input that is stored server-side and later rendered without proper output encoding. This issue has been patched in version 0.31.0.0.

Affected

ci4-cms-erp · ci4ms

CVSS v3.1 NVD

9.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 GITHUB

4.7 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS

0.36% chance of exploitation in the next 30 days, 28th percentile

Published

2026-04-01

Updated

2026-04-03

Proof-of-concept exploits (1)

• advisories/GHSA-v897-c6vq-6cr3

Security advisories

• ci4-cms-erp/ci4ms/security/advisories/GHSA-v897-c6vq-6cr3
• ci4-cms-erp/ci4ms/releases/tag/0.31.0.0

References

• CVE Record
• NVD entry