CVE-2026-63306
HIGH
NVD
CVSS Score
8.6
Severity
HIGH
Published
Jul 16, 2026
Vendor
unknown
Description
stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation. Attackers can enumerate internal services, fingerprint applications, and reach instance metadata endpoints by supplying malicious URLs or leveraging redirect chains to access internal infrastructure.