CVE-2026-77936

CriticalCVSS 9.8/10Last modified Oct 20, 2026

Description

Letta through 0.16.8 ships a compose.yaml that does not enable LETTA_SERVER_SECURE, so the password middleware is never added and all API routes are unauthenticated, and it exposes a superuser PostgreSQL port with default credentials. Remote attackers can execute arbitrary Python via POST /v1/tools/run, manage /v1/admin users, or run OS commands via COPY PROGRAM.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-1188

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
letta-ai	letta	<= 0.16.8

References

Timeline

Published: Oct 20, 2026
Last modified: Oct 20, 2026
NVD status: Awaiting Analysis

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