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Werk #17866: Dashboard: Validation of hex color codes after version update

Component User interface
Title Dashboard: Validation of hex color codes after version update
Date Mar 23, 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 Ultimate MT
2.5.0b2
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Dashboard widgets now accept lowercase hex color codes and properly handle widget configurations created before version 2.5. After updating to 2.5, some widgets — such as the "Average scatterplot" with specified colors for median, average, or metric — crashed due to validation errors for _FigureRequest.

This fix resolves the issue by correctly processing older widget configurations and accepting hex color codes with lowercase letters. No further user action required.

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