What is CVE-2026-56299?

CVE-2026-56299 is a medium-severity vulnerability in Capgo, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-06-21.

How severe is CVE-2026-56299?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Capgo

CVE-2026-56299

Capgo before 12.128.2 contains an authentication bypass vulnerability in the /build/upload/:jobId/* endpoint that allows unauthenticated attackers to trigger consistent 500 errors. Remote attackers can send OPTIONS requests to bypass authe…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Capgo — versions 0, 12.128.2

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

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

Frequently asked questions

What is CVE-2026-56299?: CVE-2026-56299 is a medium-severity vulnerability in Capgo, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-06-21.
How severe is CVE-2026-56299?: Medium severity. CVSS v3 base score is 5.3 out of 10.