PT-2026-28691 · Letta-Ai · Letta-Ai

Eric-Z + 1 · Published 2026-03-27 · Updated 2026-03-28 · CVE-2026-4965

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions letta-ai letta version 0.16.4

Description A flaw exists in the resolve type function within the letta/functions/ast parsers.py file. This issue involves improper neutralization of directives in dynamically evaluated code, potentially allowing for remote exploitation. The exploit is publicly available. The vendor was notified but did not respond.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Code Injection

Eval Injection

Weakness Enumeration

CWE-94

CWE-95

Related Identifiers

CVE-2026-4965

Affected Products

Letta-Ai

References · 7

• 🔥 https://vuldb.com/?submit.777654 · Exploit
• 🔥 https://gist.github.com/YLChen-007/fc09bc447a73bba526c1642d9ce73ca5 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4965 · Security Note
• https://twitter.com/CVEnew/status/2037719449743372691 · Twitter Post
• https://twitter.com/infoflowcloud/status/2037721431849513468 · Twitter Post
• https://vuldb.com/?ctiid.353842 · Note
• https://vuldb.com/?id.353842 · Note