Auth bypass in Microsoft Simplechat

CVE-2026-57205

SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.203, the authenticated GET /api/user/info/<user_id> and GET /api/user/profile-image/<user_id> endpoint…

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57205?
CVE-2026-57205 is a medium-severity vulnerability in Microsoft Simplechat, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-07-16.
How severe is CVE-2026-57205?
Medium severity. CVSS v3 base score is 4.3 out of 10.