Vulnerability in Octopus Deploy Octopus Server

[ Description ]Official description

In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened and the attacker's account added to a privileged team. This was achievable due to improper validation of unsafe equivalence in inputs.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund29 Sep 2026WID-SEC-2026-3639

  Octopus Deploy: Multiple vulnerabilities allow privilege escalation Translated from German

  CVE-2026-102478CVE-2026-102488

[ References ]References

• advisories.octopus.com/post/2026/sa2026-11