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CVE-2026-34938

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

Published: Apr 3, 2026Updated: Apr 14, 2026 Sources: CVE List NVDCWE-693
NVD MITRE
10.0CVSSCRITICAL
EPSS Score
0.7%
Top 51.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-693

Affected Products

PraisonAIMervinPraison
Mixed
AI / ML / ai-agent-tooling
praisonaiagentspraison
Mixed
AI / ML / ai-agent-tooling
mervinpraisoncommercialAI / MLaka praisonai, praisonaiagents, featured image
praisoncommercialAI / MLaka praisonai, praisonai agents

Exploitability

Official Patch Available

References

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

Timeline

Published
Apr 3, 2026
Last Updated
Apr 14, 2026

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