Description
In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Octopus Deploy | Octopus Server | 2026.3.0 <2026.3.15894 | — |
| Octopus Deploy | Octopus Server | 2025.3.11571 <2026.2.13503 | — |
Advisories 1
- WID-SEC-2026-4541 Octopus Deploy: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026