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CVE-2026-40287

Praison Praisonai code injection

8.4 HIGHPublic exploitEPSS 0.23%
  1. Published14 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Praison Praisonai< 4.5.139
Praison Praisonaiagents< 1.5.140

Remediation

Fixed in
Praison Praisonai≥ 4.5.139
Praison Praisonaiagents≥ 1.5.140

References

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Frequently asked

Is CVE-2026-40287 being actively exploited?

CVE-2026-40287 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.23%.

How severe is CVE-2026-40287?

CVE-2026-40287 has a CVSS 3.1 base score of 8.4, rated high. EPSS estimates a 0.23% probability of exploitation.

Which products are affected by CVE-2026-40287?

Affected products include Praison Praisonai, Praison Praisonaiagents.

How do I fix CVE-2026-40287?

Upgrade affected software to a fixed version, for example Praison Praisonai 4.5.139, Praison Praisonaiagents 1.5.140 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-40287 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.