CVE-2026-109437 – Cognition < 0.13.0 Unauthenticated RCE via Local Shell Backend

​CVE ID :CVE-2026-109437

Published : Oct. 19, 2026, 6:22 p.m. | 57 minutes ago

Description :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.

Severity: 9.8 | CRITICAL

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