CRITICALCVSS v3.1 9.8Vulnerability
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.
Properties
- Severity
- CRITICAL
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Epss score
- 0.00608
- Cvss score
- 9.8
- Cvss severity
- CRITICAL
- Retrieved at
- 2026-10-21T01:24:48+00:00
- Score
- 9.8
- Last source
- FIRST EPSS
- Cvss version
- 3.1
- Cve id
- CVE-2026-109437
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-10-19T19:31:52+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-10-19T19:17:19.807
- Last modified
- 2026-10-20T17:17:28.413
- Epss percentile
- 0.4816
Related Entities (2)
HAS_WEAKNESS (2)
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