Vulnerability in Mervinpraison Praisonai
CVE-2026-57138
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.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Mervinpraison Praisonai — versions >= 1.4.0, < 1.7.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-57138?
- CVE-2026-57138 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.9/10. Published 2026-09-15.
- How severe is CVE-2026-57138?
- Critical severity. CVSS v3 base score is 9.9 out of 10.