Werk #19773: User list page: handle unknown user roles gracefully

Component

Setup

Title

User list page: handle unknown user roles gracefully

Date

Apr 14, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0b5 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The Setup user list page could crash with a KeyError when a user had a role assigned that no longer existed in the system (e.g., a role from a plugin that was removed or a custom role that was deleted while still assigned to users).

The user list now displays the raw role ID for unknown roles instead of crashing.

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