CVE-2026-77936

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-08-21 17:52 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-10-20 01:17 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-10-20 20:06 UTC Last updatedMost recent change to the record

Details

Published

2026-10-20 01:17 UTC

Last modified

2026-10-20 20:06 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-1188

Record status

Awaiting Analysis

Attack profile CVSS 4.0 · 9.3

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High