Vulnerability · Published Aug 16, 2026 · Assigned by VulnCheck
CVE-2026-73058stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass
Medium 5.8
In plain English
A medium-severity server-side request forgery in stoatchat from stoatchat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Severity (CVSS 3.1)5.8Medium
Exploit odds (30 days)0.4%top 69.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-4rmr-77qv-hq47) vendor-advisory
- VulnCheck Advisory: stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass third-party-advisory