What is CVE-2026-56255?

CVE-2026-56255 is a medium-severity vulnerability in Capgo, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-06-22.

How severe is CVE-2026-56255?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Capgo

CVE-2026-56255

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. At…

EPSS: 0.004 (30.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Capgo — versions 0, 12.128.2

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56255?: CVE-2026-56255 is a medium-severity vulnerability in Capgo, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-06-22.
How severe is CVE-2026-56255?: Medium severity. CVSS v3 base score is 4.3 out of 10.