by Kastro
Paper/Archive/CVE-2026-34938

CVE-2026-34938

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

EPSS 13%public exploitCVSS 10.0
critical.is priorityof 100
59
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 96.4.964 × 2019.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PraisonAI< 1.5.90–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/MervinPraison/PraisonAI/security/advisories/GHSA-6vh2-h83c-9294