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 t…

{
                    "vendor": "Octopus Deploy",
                    "product": "Octopus Server",
                    "platforms": [
                        "Windows",
                        "Linux"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2023.2.945",
                            "lessThan": "2026.1.11768",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "2026.2.0",
                            "lessThan": "2026.2.13408",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "2026.3.0",
                            "lessThan": "2026.3.15816",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }