Is CVE-2026-56255 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56255?

CVE-2026-56255 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-56255

Description

Capgo before 12.128.2 contains a denial of service vulnerability in the POST /app/demo endpoint that allows authenticated users with org write permissions to create unlimited demo applications without rate limiting or quota enforcement. Attackers can repeatedly invoke this endpoint to generate approximately 138 database write operations per request, causing degraded performance, increased costs, and potential service instability.