CVE-2026-4965

HIGH

letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

Title source: cna

Description

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 neutralization of directives in dynamically evaluated code. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-353842 | letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

https://vuldb.com/?id.353842

Signature, Permissions Required signature permissions-required

VDB-353842 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/?ctiid.353842

Third Party Advisory third-party-advisory

Submit #777654 | letta-ai letta 0.16.4 CWE-95

https://vuldb.com/?submit.777654

Exploit exploit

https://gist.github.com/YLChen-007/fc09bc447a73bba526c1642d9ce73ca5

Scores

CVSS v3 7.3

EPSS 0.0060

EPSS Percentile 44.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-94 CWE-95

Status published

Products (2)

letta/letta 0.16.4

letta-ai/letta 0.16.4

Published Mar 27, 2026

Tracked Since Mar 29, 2026