PT-2026-31993 · Praisonai · Praisonai

Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-40156

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: PraisonAI versions prior to 4.5.128

Description: PraisonAI automatically loads a file named tools.py from the current working directory to discover and register custom agent tools. This process uses importlib.util.spec from file location and immediately executes module-level code via spec.loader.exec module() without user consent, validation, or sandboxing. The tools.py file is loaded implicitly, even if not referenced in configuration files. Placing a malicious tools.py file in the working directory allows for arbitrary code execution upon startup, before any agent logic begins. This introduces a software supply chain risk, potentially affecting CI/CD pipelines, shared development environments, and AI workflow automation systems. Successful exploitation can lead to arbitrary command execution and credential exfiltration.

Recommendations: Update to version 4.5.128 or later.

Exploit

Fix

Untrusted Search Path

Code Injection

Weakness Enumeration

CWE-829

CWE-426

CWE-94

Related Identifiers

CVE-2026-40156

GHSA-2G3W-CPC4-CHR4

Affected Products

Praisonai

References · 6

• 🔥 https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2g3w-cpc4-chr4 · Exploit
• https://osv.dev/vulnerability/GHSA-2g3w-cpc4-chr4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40156 · Security Note
• https://github.com/MervinPraison/PraisonAI · Note
• https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.128 · Note
• https://twitter.com/CVEnew/status/2042710226554511712 · Twitter Post