CVE-2026-34571CI4MS: Stored Cross‑Site Scripting (Stored XSS) in Backend User Management Allows Session Hijacking and Full Administrative Account Compromise
Updated under an hour ago ()
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It affects ci4-cms-erp ci4ms and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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, a Stored Cross-Site Scripting (Stored XSS) vulnerability exists in the backend user management functionality. The application fails to properly sanitize user-controlled input before rendering it in the administrative interface, allowing attackers to inject persistent JavaScript code. This results in automatic execution whenever backend users access the affected page, enabling session hijacking, privilege escalation, and full administrative account compromise. This issue has been patched in version 0.31.0.0.
- CVSS
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Apr 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ci4-cms-erp ci4ms ci4_cms_erp:ci4ms (from the name) | before 0.31.0.0 | CNA record |
ci4-cms-erp ci4ms ci4-cms-erp:ci4ms | before 0.31.0.0 | NVD |
References
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948x-refsource-confirm, exploit, vendor-advisory
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.