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Add release notes for 26.2.5 #311

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11 changes: 11 additions & 0 deletions docs/release-notes/26_2_5.adoc
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This release of Keycloak JS addresses a security issue in the Cordova adapters where OAuth state validation was not enforced on login callbacks.

== Bug Fixes

=== Cordova adapters now validate OAuth state on login callbacks

The `cordova` and `cordova-native` adapters processed OAuth callback data without validating the `state` parameter against the stored value, unlike the default adapter which checks this before processing the callback. This meant forged callback input with a missing or mismatched `state` parameter could be accepted as a legitimate authentication response, allowing externally supplied tokens to set client-side session state.

The adapters now validate the OAuth `state` parameter before processing login callbacks, consistent with the default adapter behavior. Callback input with an invalid state is rejected with a descriptive error.

https://github.com/keycloak/keycloak-js/issues/306[keycloak/keycloak-js#306]
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