CVE-2026-34560: CI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS
CVE-2026-34560 · Severity: critical · CVSS 9.1 · Published 2026-04-01
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.
Yes. ci4-cms-erp/ci4ms (Packagist): upgrade to 0.31.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-34560?
Check whether you run Ci4-Cms-Erp Ci4ms or ci4-cms-erp/ci4ms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
ci4-cms-erp/ci4ms (Packagist): upgrade to 0.31.0.0 or later