CVE-2026-40153
PraisonAIAgents Affected by Environment Variable Secret Exfiltration via os.path.expandvars() Bypassing shell=False in Shell Tool
- State
- Published
- Severity
- 7.4 High
- Published
- Apr 9, 2026
- Updated
- Apr 13, 2026
- Reserved
- Apr 9, 2026
Description
PraisonAIAgents is a multi-agent teams system. Prior to 1.5.128, the execute_command function in shell_tools.py calls os.path.expandvars() on every command argument at line 64, manually re-implementing shell-level environment variable expansion despite using shell=False (line 88) for security. This allows exfiltration of secrets stored in environment variables (database credentials, API keys, cloud access keys). The approval system displays the unexpanded $VAR references to human reviewers, creating a deceptive approval where the displayed command differs from what actually executes. This vulnerability is fixed in 1.5.128.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-526 Cleartext Storage of Sensitive Information in an Environment Variable
Affected Products
| Product | Versions |
|---|---|
PraisonAIAgentsMervinPraison |
|
References
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