CVE-2026-109442CWE-306

CVE-2026-109442

Critical · published October 20, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
52.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00694 · 52.4th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-20T05:17Z
References (4)
https://github.com/cas-bigdatalab/piflow/blob/ad8d0108a54a4257307d4946dc9250e26f24c63f/agents/tools.py#L114 · [email protected]https://github.com/cas-bigdatalab/piflow/blob/ad8d0108a54a4257307d4946dc9250e26f24c63f/server.py#L615 · [email protected]https://www.lasso.security/vulnerability-database/cve-2026-109442 · [email protected]https://www.vulncheck.com/advisories/piflow-2.0.0-through-2.0.1-unauthenticated-rce-via-chat-agent-exec-shell · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 20 OCT 00:46Z
    piflow 2.0.0 through 2.0.1 Unauthenticated RCE via Chat Agent exec_shell
    cvelistv5
  • 20 OCT 00:46Z
    piflow 2.0.0 through 2.0.1 Unauthenticated RCE via Chat Agent exec_shell
    cvelistv5