CVE-2026-102478
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductOctopus Server
PublishedOct 7, 2026
First seenOct 7, 2026
Weakness typeCWE-1289CWE-1289
How to fix
Update
- Octopus Deploy Octopus Server2026.1.11768, 2026.2.13408, 2026.3.15816 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Octopus Deploy Octopus Server | 2023.2.945 ≤ v < 2026.1.11768, 2026.2.0 ≤ v < 2026.2.13408, 2026.3.0 ≤ v < 2026.3.15816 | 2026.1.11768, 2026.2.13408, 2026.3.15816 |
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