Vulnerability in Shy2593666979 Agentchat
CVE-2026-3693
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (45.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Shy2593666979 Agentchat — versions 2.0, 2.1, 2.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- vuldb.com/ (third-party-advisory)
- github.com/CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-1 (related)
- github.com/CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-2 (exploit)
Frequently asked questions
- What is CVE-2026-3693?
- CVE-2026-3693 is a high-severity vulnerability in Shy2593666979 Agentchat, classified under Resource Injection. CVSS score: 7.3/10. Published 2026-03-08.
- How severe is CVE-2026-3693?
- High severity. CVSS v3 base score is 7.3 out of 10.