CVE-2026-34938

CRITICAL

PraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code

Title source: cna

Description

PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.

References (1)

[X_Refsource_Confirm] https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6vh2-h83c-9294

Scores

CVSS v3 10.0

EPSS 0.0004

EPSS Percentile 13.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-693

Status published

Products (3)

MervinPraison/PraisonAI < 1.5.90

praison/praisonaiagents < 1.5.90

pypi/praisonaiagents 0 - 1.5.90PyPI

Published Apr 03, 2026

Tracked Since Apr 04, 2026