PraisonAI codeMode sandbox escape via Function constructor
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-693.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MervinPraison | PraisonAI | 1.4.0 to before 1.7.2 | 1.7.2 | Patch available | CNA |
| — | praisonai (npm) | 1.4.0 to before 1.7.2 | 1.7.2 | Patch available | GHSA-vmmj-pfw7-fjwp |
- PraisonAI VendorMervinPraison Affected 1.4.0 to before 1.7.2 Fixed in 1.7.2 Patch available CNA
- praisonai (npm) Vendor— Affected 1.4.0 to before 1.7.2 Fixed in 1.7.2 Patch available GHSA-vmmj-pfw7-fjwp
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* | — | — | MervinPraison |
- cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions — — ·MervinPraison
Remediation
- Fix · CNA PraisonAI (MervinPraison) Fixed in 1.7.2
- Fix · GHSA-vmmj-pfw7-fjwp praisonai (npm) Fixed in 1.7.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57138
- 2026-10-03 Alias added: GHSA-vmmj-pfw7-fjwp
References
More MervinPraison vulnerabilities
- TI-2026-79619 Missing authentication in PraisonAI AgentOS exposes agent chat CVSS 3.1CRITICAL 9.8
- TI-2026-71236 Missing access control in PraisonAI AgentTeam exposes agent endpoints CVSS 3.1CRITICAL 9.8
- TI-2026-44052 PraisonAI before 1.6.78 Remote Code Execution via CodeAgent CVSS 4.0CRITICAL 10.0
- TI-2026-41123 praisonai-platform 0.1.4 still boots on the hardcoded JWT secret dev-secret-change-me (default-open production guard) CVSS 3.1CRITICAL 9.8
- TI-2026-41122 praisonai-platform: default JWT signing secret 'dev-secret-change-me' enables token forgery CVSS 3.1CRITICAL 9.8
- TI-2026-41118 PraisonAI MCPServer exposes unauthenticated HTTP tools/call CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-57138 · CVE Program
- CVE-2026-57138 · NVD
- FIRST EPSS
- GHSA-vmmj-pfw7-fjwp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences