CVE-2026-7581

import requests # Target vulnerable MeTube instance target_url = "http://localhost:8081" malicious_origin = "http://attacker.com" headers = { "Origin": malicious_origin, "User-Agent": "Mozilla/5.0 (PoC Scanner)" } print(f"[*] Testing CORS on {target_url}") print(f"[*] Sending Origin: {malicious_origin}") try: response = requests.get(target_url, headers=headers) # Check for CORS headers acao = response.headers.get("Access-Control-Allow-Origin") acac = response.headers.get("Access-Control-Allow-Credentials") print(f"[+] Response Access-Control-Allow-Origin: {acao}") print(f"[+] Response Access-Control-Allow-Credentials: {acac}") # Determine if vulnerable if acao == "*": print("[!] VULNERABLE: CORS allows any origin (*).") elif acao == malicious_origin: if acac == "true": print("[!] VULNERABLE: CORS reflects specific origin and allows credentials.") else: print("[!] POTENTIALLY VULNERABLE: CORS reflects specific origin.") else: print("[-] Not vulnerable or strict policy in place.") except Exception as e: print(f"[-] Error connecting to target: {e}")

{"cve": {"id": "CVE-2026-7581", "sourceIdentifier": "[email protected]", "published": "2026-05-01T13:15:59.477", "lastModified": "2026-05-01T15:26:24.553", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in alexta69 MeTube up to 2026.04.09. This affects the function on_prepare of the file app/main.py of the component CORS Policy. The manipulation leads to permissive cross-domain policy with untrusted domains. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2026.04.10 is able to mitigate this issue. The identifier of the patch is 0072d3488ae5b8d922d3ee87458d829993742a32. It is recommended to upgrade the affected component."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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": 2.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "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:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "baseScore": 5.0, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-346"}, {"lang": "en", "value": "CWE-942"}]}], "references": [{"url": "https://github.com/alexta69/metube/", "source": "[email protected]"}, {"url": "https://github.com/alexta69/metube/commit/0072d3488ae5b8d922d3ee87458d829993742a32", "source": "[email protected]"}, {"url": "https://github.com/alexta69/metube/pull/949", "source": "[email protected]"}, {"url": "https://github.com/alexta69/metube/releases/tag/2026.04.10", "source": "[email protected]"}, {"url": "https://github.com/az10b/security-advisories/blob/main/cors_MeTube.md", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/801529", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/360528", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/360528/cti", "source": "[email protected]"}]}}