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Description

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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-01 | Updated 2026-04-02 | Assigner GitHub_M




CRITICAL: 9.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 0.31.0.0
affected

References

github.com/.../ci4ms/security/advisories/GHSA-r4v5-rwr2-q7r4 exploit

github.com/.../ci4ms/security/advisories/GHSA-r4v5-rwr2-q7r4

github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0

cve.org (CVE-2026-34560)

nvd.nist.gov (CVE-2026-34560)

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