CVE-2026-40287
CVE-2026-40287 is a high-severity vulnerability in Praison Praisonai with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-22207
- Weakness: CWE-94
- Affected product: Praison Praisonai
- Published:
- Last modified:
Description
PraisonAI is a multi-agent teams system. Versions 4.5.138 and below are vulnerable to arbitrary code execution through automatic, unsanitized import of a tools.py file from the current working directory. Components including call.py (import_tools_from_file()), tool_resolver.py (_load_local_tools()), and CLI tool-loading paths blindly import ./tools.py at startup without any validation, sandboxing, or user confirmation. An attacker who can place a malicious tools.py in the directory where PraisonAI is launched (such as through a shared project, cloned repository, or writable workspace) achieves immediate arbitrary Python code execution in the host environment. This compromises the full PraisonAI process, the host system, and any connected data or credentials. This issue has been fixed in version 4.5.139.
Frequently asked questions
- What is CVE-2026-40287?
- PraisonAI is a multi-agent teams system. Versions 4.5.138 and below are vulnerable to arbitrary code execution through automatic, unsanitized import of a tools.py file from the current working directory. Components including call.py (import_tools_from_file()), tool_resolver.py (_load_local_tools()), and CLI tool-loading paths blindly import ./tools.py at startup without any validation, sandboxing, or user confirmation. An attacker who can place a malicious tools.py in the directory where PraisonAI is launched (such as through a shared project, cloned repository, or writable workspace) achieves immediate arbitrary Python code execution in the host environment. This compromises the full PraisonAI process, the host system, and any connected data or credentials. This issue has been fixed in version 4.5.139.
- How severe is CVE-2026-40287?
- CVE-2026-40287 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-40287 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-40287?
- CVE-2026-40287 primarily affects Praison Praisonai. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-40287?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-40287 have an EU (EUVD) identifier?
- Yes. CVE-2026-40287 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22207.
- When was CVE-2026-40287 published?
- CVE-2026-40287 was published on 2026-04-14 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*
- cpe:2.3:a:praison:praisonaiagents:*:*:*:*:*:python:*:*
More vulnerabilities in Praison Praisonai
- CVE-2026-39888 — Critical (CVSS 9.9): PraisonAI is a multi-agent teams system. Prior to 1.5.115, execute_code() in praisonaiagents.tools.python_tools…
- CVE-2026-41497 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. Prior to version 4.6.9, the fix for PraisonAI's MCP command handling does not…
- CVE-2026-40315 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. Prior to 4.5.133, there is an SQL identifier injection vulnerability in…
- CVE-2026-40288 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the…
- CVE-2026-39890 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. Prior to 4.5.115, the AgentService.loadAgentFromFile method uses the js-yaml…
- CVE-2026-34935 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. From version 4.5.15 to before version 4.5.69, the --mcp CLI argument is passed…
All CVEs affecting Praison Praisonai →
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