CVE-2026-102478 Privilege escalation in Octopus Server
An authenticated user with role modification permissions can escalate privileges by weakening built-in roles and joining privileged teams due to improper input validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102478?
CVE-2026-102478 is a high-severity vulnerability in Octopus Server, published on 7 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-1289
Which versions are affected by CVE-2026-102478?
How do I fix CVE-2026-102478?
No fix has been published for CVE-2026-102478 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102478 being exploited?
There is no known exploitation of CVE-2026-102478 in the wild and no public exploit code.
Sources
Also known as GHSA-r946-p43h-mw8h.