docs(jwt): update OAuth scope matching example - #939
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Description
Updates the claim-based RBAC documentation for OAuth scope matching to remove the unsupported CEL
.split(' ')example.The previous example recommended splitting the standard OAuth
scopeclaim, which is commonly represented as a space-delimited string such asread write admin. However, Envoy's CEL RBAC matcher does not support.split(' '), and kgateway now rejects unsupported CEL expressions during translation before they can reach Envoy/xDS.This change documents the supported alternative for exact scope membership matching: configure the identity provider or token minter to emit an array-shaped claim, such as
scp, and use direct CEL membership matching.The update also warns against substring checks such as
contains('admin'), because they can accidentally match longer scope values such assuperadmin.Related to https://github.com/kgateway-dev/kgateway/pull/14491
Change Type
/kind documentation