CVE-2026-109437 — Cognition < 0.13.0 Unauthenticated RCE via Local Shell Backend
Cognition before 0.13.0 contains an unauthenticated remote code execution vulnerability due to defaulting its agent sandbox backend to local execution and shipping no authentica…
Published: 2026-10-19 · CVSS: 9.2 · CVSS 4.0
Cognition before 0.13.0 contains an unauthenticated remote code execution vulnerability due to defaulting its agent sandbox backend to local execution and shipping no authentication on its REST/SSE API. Attackers can create a session via POST /sessions and post a message via POST /sessions/{id}/messages without credentials, causing the Deep Agents ReAct loop to run attacker-directed shell commands through the local shell backend, resulting in remote code execution as the server process.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7