PT-2026-51403 · Cap Go · Cap-Go

Judel777 · Published 2026-06-22 · Updated 2026-06-22 · CVE-2026-56255

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-56255

Affected Products

Cap-Go

References · 3

• https://github.com/Cap-go/capgo/security/advisories/GHSA-q2xx-6h9x-43fw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56255 · Security Note
• https://vulncheck.com/advisories/capgo-denial-of-service-via-unlimited-demo-app-creation · Note