RCE in Letta-Ai Letta
CVE-2025-6101
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.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.003 (20.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Letta-ai Letta — versions 0.4.0, 0.4.1
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2025-6101?
- CVE-2025-6101 is a medium-severity vulnerability in Letta-Ai Letta, classified under Code Injection. CVSS score: 5.5/10. Published 2025-06-16.
- How severe is CVE-2025-6101?
- Medium severity. CVSS v3 base score is 5.5 out of 10.