by Kastro
Paper/Archive/CVE-2026-57138

CVE-2026-57138

MervinPraison PraisonAI — PraisonAI codeMode sandbox escape via Function constructor

EPSS 0.7%public exploitCVSS 9.9
critical.is priorityof 100
51
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 54.1.541 × 2010.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PraisonAI>= 1.4.0, < 1.7.2–CNA

Scores by source

GitHub_M (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/MervinPraison/PraisonAI/security/advisories/GHSA-vmmj-pfw7-fjwprefgithub.com/MervinPraison/PraisonAI/commit/709a0387853709a5e2f2c34680fa64cada252c27refgithub.com/MervinPraison/PraisonAI/releases/tag/v4.6.60