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Critical · 9.3 CVE-2026-40111 EUVD-2026-21152GHSA-v7px-3835-7gjxPYSEC-2026-487

PraisonAIAgents has an OS Command Injection via shell=True in Memory Hooks Executor (memory/hooks.py)

Published Apr 9, 2026 · Updated Apr 13, 2026 · Assigned by GitHub_M

Description

PraisonAIAgents is a multi-agent teams system. Prior to 1.5.128, he memory hooks executor in praisonaiagents passes a user-controlled command string directly to subprocess.run() with shell=True at src/praisonai-agents/praisonaiagents/memory/hooks.py. No sanitization is performed and shell metacharacters are interpreted by /bin/sh before the intended command executes. Two independent attack surfaces exist. The first is via pre_run_command and post_run_command hook event types registered through the hooks configuration. The second and more severe surface is the .praisonai/hooks.json lifecycle configuration, where hooks registered for events such as BEFORE_TOOL and AFTER_TOOL fire automatically during agent operation. An agent that gains file-write access through prompt injection can overwrite .praisonai/hooks.json and have its payload execute silently at every subsequent lifecycle event without further user interaction. This vulnerability is fixed in 1.5.128.

Affected products

VendorProductAffectedFixed
MervinPraison PraisonAIAgents < 1.5.128 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI praisonaiagents < 1.5.128 1.5.128 GHSA-v7px-3835-7gjx

References