What’s Vulnerable › Vulnerabilities

CVE-2026-40088: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in praisonai

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-09 · updated 2026-10-25
• Weakness: CWE-78

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.121, the execute_command function and workflow shell execution are exposed to user-controlled input via agent workflows, YAML definitions, and LLM-generated tool calls, allowing attackers to inject arbitrary shell commands through shell metacharacters. This vulnerability is fixed in 4.5.121.

Affected products

• MervinPraison PraisonAI: before 4.5.121 — fixed in 4.5.121

How to fix

Upgrade to a fixed version: MervinPraison PraisonAI 4.5.121. Check the vendor advisory for mitigations.

References

• https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.121
• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2763-cj5r-c79m

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