CVE-2026-73058

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.

CVSS Vector

References

• https://github.com/stoatchat/stoatchat/security/advisories/GHSA-4rmr-77qv-hq47
• https://www.vulncheck.com/advisories/stoatchat-before-ssrf-via-ipv6-unspecified-address-bypass