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9 changes: 9 additions & 0 deletions changelog/2026/06-10-release-2026.6.3.md
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slug: "2026.6.3"
title: "2026.6.3: Improved security for filter queries"
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| Component | Summary (english) | Relevance for consumers (English) | Relevance for end users (Dutch) | Relevance for system administration (Dutch) |
| --------- | ------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| ZRC | Enforced strict validation for query parameters. | Integrations must only use supported query parameters; unknown parameters now return a 400 response instead of being ignored. | Gebruikers krijgen geen onbedoelde resultaten meer bij foutieve filters, wat de kans op datalekken verkleint. | |
| ZRC | Expanded audit trail coverage for GET queries with filters rsin and vestigingsnummer. | | | Beheerders krijgen uitgebreidere audittrail-informatie voor onderzoek en monitoring op organisatie-identificaties. |