CVE-2026-56231
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.
- Score
- CVSS 3.1 7.6 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-06-24
- Last modified
- 2026-06-25
- Weaknesses
- CWE-285
Affected products
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-72j4-9qp5-hfrg
- https://www.vulncheck.com/advisories/capgo-broken-object-level-authorization-in-build-job-control-via-jobid-parameter
