Excessive permissions broaden the number of people who can see, approve, or manipulate financial and travel data. That creates opportunities for fraud, misuse, and unauthorized disclosure, while also making it harder to satisfy access control requirements under regulations such as GDPR, SOX, and HIPAA. The risk grows further when accounts remain active after role changes or departure.
Why Concur permissions become a control problem, not just an admin problem
Concur sits on a sensitive junction of travel, expense, approvals, reimbursements, and finance workflows, so permissions are not just about convenience. When access is broader than needed, more users can view expense details, change records, approve items, or move transactions through the workflow. That weakens confidentiality, integrity, and accountability at the same time.
Excess privilege is especially risky in systems that combine personally identifiable information, payment-related data, and policy enforcement. A user who can see too much can expose employee travel patterns or financial details, while a user who can act too broadly can alter claims, approve exceptions, or hide misconduct. ISO/IEC 27002:2022 Information Security Controls supports this framing through least-privilege access and controlled authorization design.
The problem is amplified by business roles that change frequently. If permissions are granted for a broader operational need and then never reduced, the system accumulates standing access that no longer matches current duties. That creates a persistent gap between what the business thinks a user can do and what the account can actually do.
How excessive access turns into fraud, disclosure, and audit failure
From a security perspective, over-permissioned accounts increase the blast radius of a mistake or compromise. Someone with unnecessary approval rights can rubber-stamp expenses, manipulate amounts, or alter supporting records. Someone with unnecessary visibility can exfiltrate receipts, itineraries, employee data, or payment details without immediately triggering obvious alarms.
From a compliance perspective, the issue is that access control is not only about preventing abuse, it is also about proving restraint. If the platform cannot show that users only have the permissions required for their role, review and audit evidence becomes harder to defend. ISO/IEC 27001:2022 Information Security Management is relevant because it treats access control, privileged access, and authentication as part of a managed control system, not an ad hoc admin task.
That is why tools like Concur are often assessed alongside broader entitlement governance. The practical question is not whether a permission exists, but whether there is a current business justification for it, whether the approver is the right one, and whether the access can be revoked promptly when the role changes.
For organisations with heavy travel and expense volume, the control problem scales quickly. A small over-permission in a single account can seem harmless, but repeated across managers, delegates, finance users, and temporary approvers, it becomes a structural governance issue that is difficult to review manually.
What practitioners should verify before they trust the access model
What to verify: Check whether Concur roles are mapped to actual job functions, not to convenience, legacy practice, or one-time exceptions. Review whether approver, preparer, delegate, auditor, and finance roles are separated cleanly enough that a single account cannot both submit and approve the same transaction path.
What to measure: Look for permissions that outlive role changes, inactive users, and accounts with broad approval or reporting rights. The most useful indicator is not the raw number of roles, but the share of access that lacks a current business owner or a recent recertification decision.
What good looks like: Access is narrowly scoped, approval paths are separable, and leavers or movers lose unnecessary rights quickly. Periodic access review should be able to explain why each elevated permission exists and who approved it.
NHIMG’s Ultimate Guide to NHIs, Key Challenges and Risks is a useful companion if you want the same over-privilege logic applied to machine and service access patterns that often surround business systems and integrations.
Practitioner takeaway: In Concur, excessive permissions are dangerous because they quietly combine exposure, workflow abuse, and weak auditability, so the real control objective is to keep access both minimal and continuously justifiable.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CIS Controls v8 set the technical controls, while ISO/IEC 27001:2022 and SOC 2 (AICPA) define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| ISO/IEC 27001:2022 | A.5.15 — Access Control | Overbroad Concur access is an access-control governance and assurance issue. |
| A.8.2 — Privileged Access Rights | Excessive Concur permissions often function as elevated access to sensitive finance workflows. | |
| Recommendation — Define, approve, and review Concur access rights against business need. Limit elevated Concur roles and recertify them at short intervals. | ||
| CIS Controls v8 | 6 — Access Control Management | Concur over-permissioning is addressed by managing accounts, roles, and access reviews. |
| Recommendation — Inventory Concur accounts and remove unnecessary or stale permissions. | ||
| SOC 2 (AICPA) | CC6.1 — Logical Access Security | SOC 2 security criteria cover restricting logical access to authorised users only. |
| Recommendation — Demonstrate that Concur access is authorised, reviewed, and limited by role. | ||
Related resources from NHI Mgmt Group
- Why do manual Google Drive access reviews increase security and compliance risk?
- Why do excessive permissions become a compliance and security risk in IGA programmes?
- Why do excessive permissions in SaaS integrations increase incident risk for security operations teams?
- Why do unmanaged AWS IAM Identity Center permissions increase security and compliance risk?
