CVE-2026-3693 MEDIUM

CVE-2026-3693: Shy2593666979 AgentChat User Endpoint user.py update_user_info resource injection

Vendor Shy2593666979
Product AgentChat
Weakness CWE-99
Published March 8, 2026
Last update March 11, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A flaw has been found in Shy2593666979 AgentChat up to 2.3.0. This issue affects the function get_user_info/update_user_info of the file /src/backend/agentchat/api/v1/user.py of the component User Endpoint. This manipulation of the argument user_id causes improper control of resource identifiers. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

March 8, 2026 CVE published
March 11, 2026 Record updated