CVE-2026-56316mediumCWE-203

CVE-2026-56316: medium-severity vulnerability in Cap-go capgo

Cap-go - Job Existence Oracle via Unauthenticated OPTIONS /build/upload/:jobId/*

Published · Updated

Follow this CVE+ Monitor Capgo

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.9epss 0.3%
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. Attackers can probe the endpoint without authentication to distinguish valid job IDs from invalid ones and generate sustained unauthenticated traffic for resource consumption.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Cap-go · capgo
Related CVEs — Cap-go capgo

In the same product, most dangerous first.

CVE-2026-56081CRITICALCap-go - Account Lockout via 2FA Misconfiguration on Unverified EmailEPSS 0.4%CVE-2026-56248HIGHCapgo - Unauthenticated Denial-of-Service via audit_logs RLS PolicyEPSS 0.4%CVE-2026-56082HIGHCapgo - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPCEPSS 0.4%CVE-2026-56339HIGHCapgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPCEPSS 0.4%CVE-2026-56080MEDIUMCap-go - Authentication Logic Flaw in Enforce Password PolicyEPSS 0.4%CVE-2026-56235MEDIUMCapgo - Unauthenticated Cross-Tenant Metrics Disclosure via RPC FunctionsEPSS 0.3%