CVE-2026-57138

PraisonAI codeMode sandbox escape via Function constructor

State
Published
Severity
9.9 Critical
Published
Sep 15, 2026
Updated
Sep 17, 2026
Reserved
Jun 24, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.19.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HGitHub_M

Weaknesses

  • CWE-184 Incomplete List of Disallowed Inputs
  • CWE-693 Protection Mechanism Failure

Affected Products

ProductVersions
PraisonAIMervinPraison
  • >= 1.4.0, < 1.7.2Affected

References

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