{"id":"CVE-2026-56316","title":"Cap-go - Job Existence Oracle via Unauthenticated OPTIONS /build/upload/:jobId/*","summary":"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. At…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-203"],"vendor":"Cap-go","product":"capgo","affected":["capgo < 12.128.2"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-24T17:56:11.814088Z"},"exploitAvailable":true,"published":"2026-06-21","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:05:57.968Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56316","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-9c2x-7h5x-37gm","label":"GitHub Security Advisory (GHSA-9c2x-7h5x-37gm)"},{"url":"https://www.vulncheck.com/advisories/cap-go-job-existence-oracle-via-unauthenticated-options-build-upload-jobid","label":"VulnCheck Advisory: Cap-go - Job Existence Oracle via Unauthenticated OPTIONS /build/upload/:jobId/*"}],"tags":["cve.org","exploit-available"],"epss":0.00311,"epssPercentile":0.24105,"ingestedAt":"2026-11-08T14:51:22.358Z","slug":"CVE-2026-56316","body":"## Overview\n\nCap-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.\n\n## Affected\n\n- `capgo < 12.128.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}