CVE-2026-34570

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{"affected": [{"affectedData": [{"product": "ci4ms", "vendor": "ci4-cms-erp", "versions": [{"status": "affected", "version": "< 0.31.0.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*", "matchCriteriaId": "805F6B8A-9324-4CA4-BADE-439CC15DA14C", "versionEndExcluding": "0.31.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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, the application fails to immediately revoke active user sessions when an account is deleted. Due to a logic flaw in the backend design, account state changes are enforced only during authentication (login), not for already-established sessions. The system implicitly assumes that authenticated users remain trusted for the lifetime of their session. There is no session expiration or account expiration mechanism in place, causing deleted accounts to retain indefinite access until the user manually logs out. This behavior breaks the intended access control policy and results in persistent unauthorized access. This issue has been patched in version 0.31.0.0."}, {"lang": "es", "value": "CI4MS es un esqueleto de CMS basado en CodeIgniter 4 que ofrece una arquitectura modular, lista para producci\u00f3n, con autorizaci\u00f3n RBAC y soporte de temas. Antes de la versi\u00f3n 0.31.0.0, la aplicaci\u00f3n no revoca inmediatamente las sesiones de usuario activas cuando se elimina una cuenta. Debido a un fallo l\u00f3gico en el dise\u00f1o del backend, los cambios de estado de la cuenta se aplican solo durante la autenticaci\u00f3n (inicio de sesi\u00f3n), no para las sesiones ya establecidas. El sistema asume impl\u00edcitamente que los usuarios autenticados siguen siendo de confianza durante la vida \u00fatil de su sesi\u00f3n. No existe un mecanismo de caducidad de sesi\u00f3n o caducidad de cuenta, lo que provoca que las cuentas eliminadas retengan acceso indefinido hasta que el usuario cierre sesi\u00f3n manualmente. Este comportamiento rompe la pol\u00edtica de control de acceso prevista y resulta en acceso no autorizado persistente. Este problema ha sido parcheado en la versi\u00f3n 0.31.0.0."}], "id": "CVE-2026-34570", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34570", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-03T16:40:59.222989Z", "version": "2.0.3"}}]}, "published": "2026-04-01T22:16:20.870", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-4vxv-4xq4-p84h"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-613"}, {"lang": "en", "value": "CWE-1254"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.31.0.0)"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "ci4ms", "source": "cna", "vendor": "ci4-cms-erp"}, "product": "ci4ms", "vendor": "ci4-cms-erp"}], "analysis": {"en": {"generated_at": "2026-04-07T02:54:19.122266+00:00", "value": {"mitigation_remediation": ["Update CI4MS to version\u00a00.31.0.0 or later", "If an update is not immediately possible, terminate deleted accounts\u2019 active sessions by forcing log\u2011out or manually clearing session data", "Verify with the vendor for any additional temporary mitigations or service\u2011specific instructions"], "summary": {"action": "Apply Patch", "impact": "Persistent Unauthorized Access via Session Invalidation Failure"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the CI4MS product from CI4\u2011CMS\u2011ERP. All releases prior to version\u202f0.31.0.0 are vulnerable. The flaw was addressed and patched in the 0.31.0.0 release.", "description_and_impact": "CI4MS, a CodeIgniter\u00a04-based content management system, contains a logic flaw that causes deleted accounts to retain their authenticated sessions indefinitely. The flaw lies in the backend design, which only enforces account state changes during the authentication phase and not for sessions that are already active. As a result, when an account is marked as deleted, the system continues to trust the user until they manually log out. This leads to persistent unauthorized access across all roles assigned to the account, undermining the intended role\u2011based access control model.", "risk_and_exploitability": "The CVSS score of 8.8 indicates high severity, while the EPSS score of fewer than 1\u202f% points to a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is an attacker gaining access to the administrative interface to delete an account or manipulating the deletion API; this is inferred since the input does not explicitly state how the deletion action is performed. Once an account is flagged as deleted, any existing session remains active until the user explicitly logs out, allowing continuous access. The risk is therefore high if the attacker can delete an account or trigger the deletion mechanism, even though the likelihood of such an exploit is low given the current EPSS value."}}}}, "created": "2026-04-02T07:47:12.041260+00:00", "updated": "2026-04-07T07:56:29.272071+00:00", "vendors": ["ci4-cms-erp", "ci4-cms-erp$PRODUCT$ci4ms"]}