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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2025-6101
• letta-ai/letta#2613
• https://vuldb.com/?ctiid.312570
• https://vuldb.com/?id.312570
• https://vuldb.com/?submit.590528