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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-34571", "lastModified": "2026-04-02T17:16:24.540", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-01T22:16:21.030", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.31.0.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ci4ms", "source": "cna", "vendor": "ci4-cms-erp"}, "product": "ci4ms", "vendor": "ci4-cms-erp"}], "analysis": {"en": {"generated_at": "2026-04-02T05:35:45.669313+00:00", "value": {"mitigation_remediation": ["Upgrade CI4MS to version\u00a00.31.0.0 or later."], "summary": {"action": "Immediate Patch", "impact": "Session Hijacking and Administrative Privilege Escalation"}, "threat_synthesis": {"affected_systems": "All releases of CI4MS prior to version\u00a00.31.0.0 are vulnerable. The flaw resides in the backend user management component and can be exploited by users who have access to the administrative interface, typically administrators or staff with sufficient privileges.", "description_and_impact": "CI4MS, a CodeIgniter\u00a04\u2011based CMS skeleton, contains a stored cross\u2011site scripting weakness in its backend user management module. The application does not sanitize user\u2011controlled input before rendering it in the administrative interface, enabling persistent JavaScript injection. When an authenticated backend user loads the affected page, the injected script runs automatically, compromising the user\u2019s session and allowing an attacker to elevate privileges and fully compromise the administrative account.", "risk_and_exploitability": "The vulnerability carries a CVSS score of\u00a010, indicating critical severity. Although an EPSS score is not available, the lack of input sanitization and the potential for full administrative takeover suggest a high likelihood of exploitation, especially in environments where attacker access to the CMS or compromised credentials is feasible. The flaw is not listed in the CISA KEV catalog. The likely attack vector is an attacker who can modify backend user records through authorized administrative access, leading to persistent script execution."}}}}, "created": "2026-04-02T07:47:11.025435+00:00", "updated": "2026-04-02T20:16:09.016596+00:00", "vendors": ["ci4-cms-erp", "ci4-cms-erp$PRODUCT$ci4ms"]}