CVE-2026-3693 Shy2593666979 AgentChat User Endpoint user.py update_user_info resource injection
Attackers can manipulate user_id parameters to access or modify other users' information in AgentChat due to improper resource identifier control.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3693?
CVE-2026-3693 is a medium-severity vulnerability in Shy2593666979 AgentChat, published on 8 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-99
Which versions are affected by CVE-2026-3693?
How do I fix CVE-2026-3693?
No fix has been published for CVE-2026-3693 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3693 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3693 exists.
Sources
Also known as GHSA-frqp-x7gx-64vp.