What’s Vulnerable › Vulnerabilities

CVE-2026-109442: piflow 2.0.0 through 2.0.1 Unauthenticated RCE via Chat Agent exec_shell

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-20
• Weakness: CWE-306

Description

piflow 2.0.0 through 2.0.1 contains a remote code execution vulnerability in its DeepAgents chat agent, whose POST /chat and POST /chat/stream endpoints lack authentication. Attackers can instruct the agent to call the exec_shell tool, which runs arbitrary commands via subprocess.run without human approval or an allow-list, exposing environment secrets such as LLM API keys and database credentials.

Affected products

• cas-bigdatalab piflow: from 2.0.0 through 2.0.1

References

• https://github.com/cas-bigdatalab/piflow/blob/ad8d0108a54a4257307d4946dc9250e26f24c63f/agents/tools.py#L114
• https://github.com/cas-bigdatalab/piflow/blob/ad8d0108a54a4257307d4946dc9250e26f24c63f/server.py#L615
• https://www.lasso.security/vulnerability-database/cve-2026-109442
• https://www.vulncheck.com/advisories/piflow-2.0.0-through-2.0.1-unauthenticated-rce-via-chat-agent-exec-shell

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