CVE-2026-56316

MediumCVSS 5.3/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-203

Affected software

Vendor	Product	Versions
Cap-go	capgo	< 12.128.2

References

Timeline

Published: Jun 21, 2026
Last modified: Oct 25, 2026
NVD status: Deferred

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