Werk #18300: Rulesets: Accept valid regex patterns in explicit host conditions
| Component | Setup | ||||||||
| Title | Rulesets: Accept valid regex patterns in explicit host conditions | ||||||||
| Date | Apr 17, 2026 | ||||||||
| Level | Trivial Change | ||||||||
| Class | Bug Fix | ||||||||
| Compatibility | Compatible - no manual interaction needed | ||||||||
| Checkmk versions & editions |
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Werk #18988 introduced validation of regex patterns in explicit host
conditions. However, valid regex patterns starting with ~ were
afterwards incorrectly rejected as invalid hostnames: after a successful
regex compile, the code fell through to hostname validation, which
rightfully refused the regex as a host name.
Valid regex patterns are now accepted again. Invalid ones still produce a clear error message, as intended by werk #18491.