CVE-2026-6143

import requests # Target URL (Replace with actual vulnerable endpoint) target_url = "http://localhost:8080/api/proxy" # Malicious Origin header malicious_origin = "http://evil.com" headers = { "Origin": malicious_origin, "User-Agent": "PoC-Scanner/1.0" } try: # Send a pre-flight OPTIONS request or a simple GET request response = requests.options(target_url, headers=headers, timeout=5) print(f"[+] Target: {target_url}") print(f"[+] Sent Origin: {malicious_origin}") print(f"[+] Response Status: {response.status_code}") print("[+] Response Headers:") # Check if the server reflects the malicious origin in CORS headers acao = response.headers.get("Access-Control-Allow-Origin") acac = response.headers.get("Access-Control-Allow-Credentials") if acao: print(f" Access-Control-Allow-Origin: {acao}") if acac: print(f" Access-Control-Allow-Credentials: {acac}") # Vulnerability Condition: Reflects specific origin or allows '*' with credentials if acao == malicious_origin or (acao == "*" and acac == "true"): print("\n[!] VULNERABILITY CONFIRMED: Permissive CORS policy detected.") else: print("\n[-] Vulnerability not detected or strict CORS is enforced.") except requests.exceptions.RequestException as e: print(f"[-] Error connecting to target: {e}")

{"cve": {"id": "CVE-2026-6143", "sourceIdentifier": "[email protected]", "published": "2026-04-13T02:16:04.783", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in farion1231 cc-switch up to 3.12.3. Affected by this issue is some unknown functionality of the file src-tauri/src/proxy/server.rs of the component ProxyServer. The manipulation results in permissive cross-domain policy with untrusted domains. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": 2.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "baseScore": 6.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 8.0, "impactScore": 6.4, "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/farion1231/cc-switch/", "source": "[email protected]"}, {"url": "https://github.com/farion1231/cc-switch/issues/1841", "source": "[email protected]"}, {"url": "https://github.com/farion1231/cc-switch/issues/1841#issue-4191294952", "source": "[email protected]"}, {"url": "https://github.com/farion1231/cc-switch/pull/1915", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/796145", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/357007", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/357007/cti", "source": "[email protected]"}]}}