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CVE-2026-17594 is an incorrect authorization vulnerability in Sonatype Nexus Repository 3 CE/Pro affecting versions 3.0.0 through 3.94.x. The flaw exists in the repository-creation user interface and associated create flow, including the RepositoryUiService.create() path exposed through the ExtDirect interface. Authorization is validated against one request field representing an allowed repository format, while a separate attacker-controlled field determines the repository format actually created. Because these fields can be mismatched, an authenticated user with delegated repository-admin privileges limited to one repository format can create a repository of a different, unauthorized format. The issue is a privilege-escalation and authorization-bypass condition rather than unauthenticated access, and it does not affect the anonymous user by default because anonymous access cannot normally hold the required delegated privilege.
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A privilege escalation vulnerability in Sonatype Nexus Repository versions prior to 3.95.0 that allows repository creation or administrative action bypass via a repository format mismatch condition.
An incorrect authorization vulnerability in Nexus Repository 3 that allows a user with delegated repository-admin privileges for one repository format to create a repository of a different, unauthorized format due to inconsistent authorization checking in the repository-creation UI.
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