CVE-2026-77936: letta 0 through 0.16.8

Affected technology

letta · 0 through 0.16.8
letta-ai

Description’s affected range: through 0.16.8 ships a compose.yaml that does not enable LETTA_SERVER_SECURE

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Remote attackers can execute arbitrary Python via POST /v1/tools/run, manage /v1/admin users, or run OS commands via COPY PROGRAM. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality, integrity and availability impact as high.