RCE in Letta
CVE-2026-4965
A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolve_type of the file letta/functions/ast_parsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neu…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.000 (7.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Letta — versions 0.16.4
- Letta-ai Letta — versions 0.16.4
Weakness classification (CWE)
References
- VDB-353842 | letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-353842 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #777654 | letta-ai letta 0.16.4 CWE-95 (Exploit, Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-4965?
- CVE-2026-4965 is a high-severity vulnerability in Letta, classified under Code Injection. CVSS score: 7.3/10. Published 2026-03-27.
- How severe is CVE-2026-4965?
- High severity. CVSS v3 base score is 7.3 out of 10.