CVE-2026-57138

CRITICAL 9.9

PraisonAI codeMode sandbox escape via Function constructor

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

PraisonAI is a multi-agent teams system. From 1.4.0 until 1.7.2, codeMode in src/praisonai-ts/src/tools/builtins/code-mode.ts executes untrusted JavaScript with new Function() inside with(sandbox) and relies on a small source-code blocklist plus shadowed process and require properties. Code can use ({}).constructor.constructor to recover the real Function constructor, obtain process and process.mainModule.require, and reach host filesystem and subprocess APIs despite the advertised sandbox. Attackers who control codeMode input can read secrets, modify files, execute commands, or exhaust the host process. This issue is fixed in version 1.7.2.

CWE	CWE-184 CWE-693
Vendor	mervinpraison
Product	praisonai
Published	Sep 15, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

MervinPraison / PraisonAI

>= 1.4.0, < 1.7.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vmmj-pfw7-fjwp github.com: https://github.com/MervinPraison/PraisonAI/commit/709a0387853709a5e2f2c34680fa64cada252c27 github.com: https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.60