# CVE-2026-4828: Improper authentication in the OAuth login functionality in Devolutions Server 2026.1.11 and earlier allows a remote…

Source: https://junglewise.ai/threats/cve-2026-4828-improper-authentication-in-the-oauth-login-functionality-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-01  
License: CC BY 4.0 with a link back

CVE-2026-4828 · Severity: high · CVSS 8.2 · Published 2026-04-01

Improper authentication in the OAuth login functionality in Devolutions Server 2026.1.11 and earlier allows a remote attacker with valid credentials to bypass multi-factor authentication via a crafted login request.

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

## Quick answers

**Is CVE-2026-4828 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-4828 being exploited in the wild.

**How severe is CVE-2026-4828?** High severity, with a CVSS score of 8.2, published 1 April 2026.

**Which products and versions are affected?** Devolutions Server. The advisory does not name versions.

**Is there a fix for CVE-2026-4828?** 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.

**Am I affected by CVE-2026-4828?** Check whether you run Devolutions Server. 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.

## Affected products

- Devolutions Server

## 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)