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CVE-2026-4965— letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

Quick assessment

Affected
letta-ai letta
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Letta-ai letta是Letta-ai开源的一个具有内存、推理和上下文管理的有状态代理框架。 letta-ai letta 0.16.4版本存在安全漏洞，该漏洞源于对文件letta/functions/ast_parsers.py中函数的错误操作，可能导致动态评估代码中的指令中和不当。

CVSS 7.3 · High EPSS 0.77% · P55
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I. Basic Information for CVE-2026-4965

Vulnerability Information
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Vulnerability Title
letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Letta-ai letta 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Letta-ai letta是Letta-ai开源的一个具有内存、推理和上下文管理的有状态代理框架。 letta-ai letta 0.16.4版本存在安全漏洞，该漏洞源于对文件letta/functions/ast_parsers.py中函数的错误操作，可能导致动态评估代码中的指令中和不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
letta-ai letta 0.16.4 cpe:2.3:a:letta:letta:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-4965

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III. Intelligence Information for CVE-2026-4965

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Vendor Advisories for CVE-2026-4965 (2)

Proof of Concept for CVE-2026-4965 (1)

IV. Related Vulnerabilities

Same product: letta
Same vendor: letta-ai
Same weakness: CWE-95

V. Comments for CVE-2026-4965

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