# CVE-2026-100289: Devolutions Server missing authorization in gateway network scan token API

Source: https://junglewise.ai/threats/cve-2026-100289-missing-authorization-in-the-gateway-network-scan-token-api-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-29. Updated: 2026-09-29  
License: CC BY 4.0 with a link back

CVE-2026-100289 · Severity: medium · CVSS 5 · Published 2026-09-29

Devolutions Server is a centralized platform for managing remote connections and credentials. An authenticated low-privilege user can exploit a missing authorization check in the gateway network scan API to generate tokens that enable unauthorized internal network discovery and port scanning, potentially revealing sensitive infrastructure details.

Technologies: [Devolutions Server](https://junglewise.ai/threats/technologies/devolutions-server). Vendors: [Devolutions](https://junglewise.ai/threats/vendors/devolutions).

## Quick answers

**Is CVE-2026-100289 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100289 being exploited in the wild.

**How severe is CVE-2026-100289?** Medium severity, with a CVSS score of 5, published 29 September 2026.

**Which products and versions are affected?** Devolutions Server 2026.3.5.0 and earlier.

**Is there a fix for CVE-2026-100289?** 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-2026-100289 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-100289?** Check whether you run Devolutions Server 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

Missing authorization validation in the gateway network scan token API allows authenticated low-privilege users to generate network scan tokens via crafted API requests. An attacker with low privileges can leverage these tokens to discover internal network topology and scan ports through the gateway, bypassing intended access controls. A fix is available in versions after 2026.3.5.0.

## Affected products

- Devolutions Server 2026.3.5.0 and earlier

## Timeline

- 2026-09-29: disclosed

## References

- [https://devolutions.net/security/advisories/DEVO-2026-0034/](https://devolutions.net/security/advisories/DEVO-2026-0034/)

## Related threats

- [Devolutions Server improper access control in autofill vault search](https://junglewise.ai/threats/cve-2026-126332-improper-access-control-in-the-autofill-vault-search-in)
- [Devolutions Server sensitive information disclosure in user list endpoint](https://junglewise.ai/threats/cve-2026-126331-insertion-of-sensitive-information-into-sent-data-in-the-user)
- [Devolutions Server sensitive information disclosure in user endpoints](https://junglewise.ai/threats/cve-2026-126328-insertion-of-sensitive-information-into-sent-data-in-the-user)
- [Devolutions Server improper access control in connection history](https://junglewise.ai/threats/cve-2026-126327-improper-access-control-in-the-connection-history-in-devolutions)
- [Devolutions Server privilege escalation via role assignment endpoint](https://junglewise.ai/threats/cve-2026-126326-improper-access-control-in-the-administrative-role-assignment)