Is CVE-2026-104459 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-104459?

CVE-2026-104459 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-104459

Description

YesWiki before 4.6.7 contains a server-side request forgery vulnerability in WebfingerService that allows unauthenticated attackers to trigger HTTPS requests to internal hosts. Attackers can POST a crafted actor_handle with a numeric host and port to the abonnements view to probe internal HTTPS services and ports.