CVE-2025-6101: Letta-Ai Letta

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in letta-ai letta up to 0.4.1. Affected is the function function_message of the file letta/letta/interface.py. The manipulation of the argument function_name/function_args leads to improper neutralization of directives in dynamically evaluated code. The exploit has been disclosed to the public and may be used.

Affected products

• Letta-Ai Letta: version 0.4.0 only; version 0.4.1 only

Published 2025-06-16. Last modified 2026-06-17.