Is CVE-2026-56303 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56303?

CVE-2026-56303 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-56303

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the find_apikey_by_value PostgreSQL function marked SECURITY DEFINER and executable by the anon role. Unauthenticated attackers can call this function via the /rest/v1/rpc/find_apikey_by_value endpoint to retrieve sensitive API key metadata including user_id, mode, org scoping, and expiration details when supplied a valid key value.