CVE-2026-109437

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/CognicellAI/Cognition/releases/tag/v0.13.0
https://www.lasso.security/vulnerability-database/cve-2026-109437
https://www.vulncheck.com/advisories/cognition-unauthenticated-rce-via-local-shell-backend

Configurations

No configuration.

History

19 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-19 19:17

Updated : 2026-10-20 17:17

NVD link : CVE-2026-109437

Mitre link : CVE-2026-109437

CVE.ORG link : CVE-2026-109437

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

CWE-1188

Initialization of a Resource with an Insecure Default

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