Werk #19091: Fix possible ValueError on user notification rules

Component

Notifications

Title

Fix possible ValueError on user notification rules

Date

Mar 10, 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
2.5.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p24	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, user notification rules using custom notification scripts with the option "Call with the following parameters" caused a ValueError when matching. This prevented the notification from being sent. This has been fixed.

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