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CVE-2026-34989

9.4 critical SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.4 · ci4-cms-erpNVD modified 2026-10-23 23:10

Affected (CPE criteria) 1

  • cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*

References 2