CVE-2026-77936: Letta through 0.16.8 Insecure Default Configuration Unauthenticated API and PostgreSQL Access
letta-ai · letta
Affected: letta-ai · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 48% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- letta-ai · lettaup to and including 0.16.8
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Initialization of a Resource with an Insecure Default · Misconfiguration and Insecure Design
- Vendor
- letta-ai
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-77936 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.