Is CVE-2026-63088 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-63088?

CVE-2026-63088 has a CVSS v3 severity of HIGH (8.6).

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CVE-2026-63088

Description

stoatchat before 0.14.0 contains a server-side request forgery (SSRF) vulnerability that allows unauthenticated network-accessible attackers to bypass the DNS-based IP blocklist by exploiting incomplete address validation in the url_is_blacklisted function, which inspects only the first resolved address while the underlying HTTP client iterates all cached addresses.