What is CVE-2026-56316?

CVE-2026-56316 is a medium-severity vulnerability in Cap-go Capgo, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-06-21.

How severe is CVE-2026-56316?

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

Vulnerability in Cap-go Capgo

CVE-2026-56316

Cap-go before 12.128.2 contains an information disclosure vulnerability in the OPTIONS /build/upload/:jobId/* endpoint that allows unauthenticated attackers to enumerate valid builder job IDs through observable response discrepancies. Atta…

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:L/I:N/A:N.

Affected products

Cap-go Capgo — versions 0, 12.128.2

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

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

Frequently asked questions

What is CVE-2026-56316?: CVE-2026-56316 is a medium-severity vulnerability in Cap-go Capgo, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-06-21.
How severe is CVE-2026-56316?: Medium severity. CVSS v3 base score is 5.3 out of 10.