CRITICAL: CVE-2026-34989 (CVSS 9) — ci4-cms-erp ci4ms

CVE: CVE-2026-34989

CVSS: 9 (3.1) — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

ci4-cms-erp ci4ms

Summary

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 31.0.0.0, the application fails to properly sanitize user-controlled input when users update their profile name (e.g., full name / username). An attacker can inject a malicious JavaScript payload into their profile name, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This vulnerability is fixed in 31.0.0.0.

Verified Sources

References

https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#ci4-cms-erp #critical