# CVE-2026-54367: Gladinet CentreStack auth bypass in API endpoints

Source: https://junglewise.ai/threats/cve-2026-54367-gladinet-centrestack-auth-bypass-in-api-endpoints  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-30. Updated: 2026-07-30  
License: CC BY 4.0 with a link back

CVE-2026-54367 · Severity: high · CVSS 8.6 · Published 2026-07-30

CentreStack is a file-sharing and collaboration platform used by managed service providers to provide secure remote access to data. A security flaw allows unauthorized individuals to bypass login requirements and modify or delete critical account settings. This could lead to the exposure of administrator identities, the takeover of tenant accounts, or significant disruption to the file-sharing service.

Technologies: [Gladinet CentreStack](https://junglewise.ai/threats/technologies/centrestack). Vendors: [Gladinet](https://junglewise.ai/threats/vendors/gladinet).

## Quick answers

**Is CVE-2026-54367 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-54367 being exploited in the wild.

**How severe is CVE-2026-54367?** High severity, with a CVSS score of 8.6, published 30 July 2026.

**Which products and versions are affected?** Gladinet CentreStack before 17.2.

**Is there a fix for CVE-2026-54367?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-54367 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-54367?** Check whether you run Gladinet CentreStack at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An authentication bypass vulnerability exists in CentreStack's API endpoints due to missing authorization checks (CWE-306). The flaw stems from the use of a static shared encryption key, which allows unauthenticated attackers to generate valid encrypted 'EntAcctId' values. By forging these identifiers for specific user GUIDs, including the system-wide cluster settings account, an attacker can enumerate hosted tenant domains and administrator identities. This enables the unauthorized modification or deletion of account configurations over the network without user interaction. The issue is addressed in version 17.2.

## Affected products

- Gladinet CentreStack before 17.2

## Timeline

- 2026-07-30: disclosed
- 2026-07-30: advisory

## References

- [https://www.centrestack.com/](https://www.centrestack.com/)
- [https://www.vulncheck.com/advisories/centrestack-unauthenticated-api-authorization-bypass](https://www.vulncheck.com/advisories/centrestack-unauthenticated-api-authorization-bypass)

## Related threats

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- [Gladinet CentreStack XXE in SharePoint storage configuration handler](https://junglewise.ai/threats/cve-2026-54366-gladinet-centrestack-xxe-in-sharepoint-storage-configuration)
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