CVE-2026-3693
HIGHAgentChat <= 2.3.0 - Improper Control of Resource Identifiers via User Endpoint
Title source: llmDescription
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.
References (6)
Core 6
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.349640
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.349640
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.765589
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.765590
Third Party Advisory related
https://github.com/CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-1
Third Party Advisory exploit
https://github.com/CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-2
Scores
CVSS v3
7.3
EPSS
0.0040
EPSS Percentile
32.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-99
Status
published
Published
Mar 08, 2026
Tracked Since
Mar 08, 2026