Is CVE-2026-104440 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-104440?

CVE-2026-104440 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-104440

Description

YesWiki before 4.6.7 contains a blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.