Vulnerability Details CVE-2026-27599
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 – Mail Settings. Several configuration fields, including Mail Server, Mail Port, Email Address, Email Password, Mail Protocol, and TLS settings, 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 3.6%
CVSS Severity
CVSS v3 Score 4.7
Products affected by CVE-2026-27599
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.1
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.2
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.1
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.2
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.3
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.4
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.5
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.6
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.21.3.7
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.23.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.23.0.1
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.23.0.2
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.23.1.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.16
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.18
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.19
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.20
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.27
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.42
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.45
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.24.0.60
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.1
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.2
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.30
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.39
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.0.43
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.1.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.2.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.25.3.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.1.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.2.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.3.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.3.1
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.3.2
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.3.3
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.26.3.4
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.27.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.28.0.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.28.3.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.28.4.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.28.5.0
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cpe:2.3:a:ci4-cms-erp:ci4ms:0.28.6.0