CVE-2026-34938
PraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code
CVSS Score
10.0
EPSS Score
0.1%
EPSS Percentile
28th
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.
| CWE | CWE-693 |
| Vendor | mervinpraison |
| Product | praisonai |
| Published | Apr 3, 2026 |
| Last Updated | Apr 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
MervinPraison / PraisonAI
< 1.5.90