CVE-2026-40288

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{"affected": [{"affectedData": [{"product": "PraisonAI", "vendor": "MervinPraison", "versions": [{"status": "affected", "version": "< 4.5.139"}]}, {"product": "praisonaiagents", "vendor": "MervinPraison", "versions": [{"status": "affected", "version": "< 1.5.140"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*", "matchCriteriaId": "E5F6A0D4-AFE6-4DDA-A1C0-E74C7DD46E00", "versionEndExcluding": "4.5.139", "vulnerable": true}, {"criteria": "cpe:2.3:a:praison:praisonaiagents:*:*:*:*:*:python:*:*", "matchCriteriaId": "37CF4D9C-AD55-414A-9BF2-49A51F03A682", "versionEndExcluding": "1.5.140", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the workflow engine is vulnerable to arbitrary command and code execution through untrusted YAML files. When praisonai workflow run <file.yaml> loads a YAML file with type: job, the JobWorkflowExecutor in job_workflow.py processes steps that support run: (shell commands via subprocess.run()), script: (inline Python via exec()), and python: (arbitrary Python script execution)\u2014all without any validation, sandboxing, or user confirmation. The affected code paths include action_run() in workflow.py and _exec_shell(), _exec_inline_python(), and _exec_python_script() in job_workflow.py. An attacker who can supply or influence a workflow YAML file (particularly in CI pipelines, shared repositories, or multi-tenant deployment environments) can achieve full arbitrary command execution on the host system, compromising the machine and any accessible data or credentials. This issue has been fixed in versions 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents."}, {"lang": "es", "value": "PraisonAI es un sistema de equipos multiagente. En versiones anteriores a la 4.5.139 de PraisonAI y la 1.5.140 de praisonaiagents, el motor de flujo de trabajo es vulnerable a la ejecuci\u00f3n arbitraria de comandos y c\u00f3digo a trav\u00e9s de archivos YAML no confiables. Cuando praisonai workflow run <file.yaml> carga un archivo YAML con type: job, el JobWorkflowExecutor en job_workflow.py procesa pasos que admiten run: (comandos de shell a trav\u00e9s de subprocess.run()), script: (Python en l\u00ednea a trav\u00e9s de exec()), y python: (ejecuci\u00f3n arbitraria de scripts de Python), todo sin ninguna validaci\u00f3n, sandboxing o confirmaci\u00f3n del usuario. Las rutas de c\u00f3digo afectadas incluyen action_run() en workflow.py y _exec_shell(), _exec_inline_python(), y _exec_python_script() en job_workflow.py. Un atacante que puede proporcionar o influir en un archivo YAML de flujo de trabajo (particularmente en pipelines de CI, repositorios compartidos o entornos de despliegue multi-inquilino) puede lograr la ejecuci\u00f3n completa y arbitraria de comandos en el sistema anfitri\u00f3n, comprometiendo la m\u00e1quina y cualquier dato o credencial accesible. Este problema ha sido solucionado en las versiones 4.5.139 de PraisonAI y 1.5.140 de praisonaiagents."}], "id": "CVE-2026-40288", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40288", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-14T15:56:49.344666Z", "version": "2.0.3"}}]}, "published": "2026-04-14T04:17:12.210", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vc46-vw85-3wvm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-94"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.5.139)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "PraisonAI", "source": "cna", "vendor": "MervinPraison"}, "product": "praisonai", "vendor": "mervinpraison"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.5.140)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "praisonaiagents", "source": "cna", "vendor": "MervinPraison"}, "product": "praisonaiagents", "vendor": "mervinpraison"}], "analysis": {"en": {"generated_at": "2026-04-14T05:50:55.802623+00:00", "value": {"mitigation_remediation": ["Upgrade PraisonAI to version 4.5.139 or later and praisonaiagents to version 1.5.140 or later.", "Restrict creation and distribution of workflow YAML files to trusted, authenticated users only.", "Disable or remove untrusted 'type: job' workflows in CI pipelines until the patch is applied.", "Apply least\u2011privilege principles to the account running the workflow engine to limit potential damage.", "Monitor logs for unexpected 'run', 'script', or 'python' execution commands."], "summary": {"action": "Patch Immediately", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The affected products are MervinPraison PraisonAI and its agent component praisonaiagents. Versions prior to 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents are vulnerable. The issue was fixed in those specific version thresholds, which are listed as the minimum safe release numbers.", "description_and_impact": "PraisonAI\u2019s workflow engine processes YAML files with type: job that can contain run, script, or python elements. These steps invoke shell commands or inline Python without validation, allowing an attacker to execute arbitrary code on the host system. The vulnerability is identified as CWE-78 and CWE-94, representing OS command injection and code injection. The impact is full remote code execution resulting in complete compromise of the machine and any data or credentials the system can access.", "risk_and_exploitability": "The CVSS base score of 9.8 reflects critical risk. EPSS data is not available, and it is not listed in the CISA KEV catalog. The likely attack vector is an attacker that can provide or modify a workflow YAML file, which, based on the description, is inferred to occur through CI pipelines, shared code repositories, or multi\u2011tenant deployment environments. Successful exploitation yields full arbitrary command execution on the host, granting the attacker control over the system and access to all data it can reach."}}}}, "created": "2026-04-14T16:15:58.903526+00:00", "updated": "2026-04-14T16:30:55.635743+00:00", "vendors": ["mervinpraison", "mervinpraison$PRODUCT$praisonai", "mervinpraison$PRODUCT$praisonaiagents"]}