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Vulnerability details

CVE-2026-40153

MervinPraison praisonaiagents

PraisonAIAgents Affected by Environment Variable Secret Exfiltration via os.path.expandvars() Bypassing shell=False in Shell Tool

CVSS 3.1
7.4High

Official 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.

CVSS scores

ScoreVersionSourceVector
7.4High 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Affected products

VendorProductVersionsSource
MervinPraison praisonaiagents < 1.5.128 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-04-10
Last updated
2026-04-13
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.27%
Probability of exploitation in 30 days
20.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Proof of concept
Technical impact
Partial

Weaknesses (CWE)

  • CWE-526
    Cleartext Storage of Sensitive Information in an Environment Variable