What is CVE-2026-73058?

CVE-2026-73058 is a medium-severity vulnerability in Stoatchat, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.8/10. Published 2026-08-16.

How severe is CVE-2026-73058?

Medium severity. CVSS v3 base score is 5.8 out of 10.

SSRF in Stoatchat

CVE-2026-73058

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address (::) in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface and retrieve sensitive internal content.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.

Affected products

Stoatchat — versions 0, 0.15.0

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-2026-73058?: CVE-2026-73058 is a medium-severity vulnerability in Stoatchat, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.8/10. Published 2026-08-16.
How severe is CVE-2026-73058?: Medium severity. CVSS v3 base score is 5.8 out of 10.