Is CVE-2026-50199 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-50199?

CVE-2026-50199 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-50199

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.1, endpoints/currency/update_exchange.php loads the first Fixer/API Layer credential globally instead of loading the credential for the authenticated user. As a result, a normal authenticated user without their own provider key can trigger exchange-rate refreshes using another user's stored provider credential. This issue has been patched in version 4.9.1.