PT-2026-51766 · Cap Go · Cap-Go

Judel777 · Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-56231

Mitre

CVSS v3.1

7.6

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Capgo before 12.128.2 contains a broken object level authorization (BOLA) vulnerability in the POST /build/start/:jobId and POST /build/cancel/:jobId endpoints. The handlers authorize the request based only on the attacker-controlled app id supplied in the request body and never verify that the jobId in the URL belongs to that app id (or the same tenant/org) before issuing privileged builder commands with the server-held builder API key. An authenticated user with the app.build native permission for any app they control can start or cancel arbitrary builder jobs belonging to other tenants by supplying a victim jobId, resulting in cross-tenant build sabotage (denial of service), unauthorized compute actions, and potential billing impact.

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-56231

Affected Products

Cap-Go

References · 3

• https://github.com/Cap-go/capgo/security/advisories/GHSA-72j4-9qp5-hfrg · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56231 · Security Note
• https://vulncheck.com/advisories/capgo-broken-object-level-authorization-in-build-job-control-via-jobid-parameter · Note