What is CVE-2026-63306?

CVE-2026-63306 is a high-severity vulnerability in Stoatchat, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-16.

How severe is CVE-2026-63306?

High severity. CVSS v3 base score is 8.6 out of 10.

SSRF in Stoatchat

CVE-2026-63306

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 enum…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Stoatchat — versions 0, 0.13.5

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63306?: CVE-2026-63306 is a high-severity vulnerability in Stoatchat, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-16.
How severe is CVE-2026-63306?: High severity. CVSS v3 base score is 8.6 out of 10.