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Medium · 5.3 CVE-2026-56299 EUVD-2026-38171GHSA-33r3-cpxm-4xg2

Capgo - Denial of Service via Unauthenticated OPTIONS Request to /build/upload Endpoint

Published Jun 21, 2026 · Updated Nov 8, 2026 · Assigned by VulnCheck

Description

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 authentication middleware and invoke tusProxy logic with invalid credentials, enabling trivial request flooding and denial of service.

Affected products

VendorProductAffectedFixed
Capgo Capgo < 12.128.2 12.128.2

References