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AWS singlesignon documentation change

Service: singlesignon · 2025-10-19 · Documentation medium

File: singlesignon/latest/userguide/limits.md

Summary

Added new 'OIDC service request quotas' section with rate limits for authentication-related APIs

Security assessment

Documents rate limits for authentication operations which helps prevent abuse/DoS attacks, but does not indicate a specific security issue being fixed

Diff

diff --git a/singlesignon/latest/userguide/limits.md b/singlesignon/latest/userguide/limits.md
index e93168675..47936f108 100644
--- a//singlesignon/latest/userguide/limits.md
+++ b//singlesignon/latest/userguide/limits.md
@@ -5 +5 @@
-Application quotasAWS account quotasActive Directory quotasIAM Identity Center identity store quotasIAM Identity Center throttle limitsAdditional quotas
+Application quotasAWS account quotasActive Directory quotasIAM Identity Center identity store quotasIAM Identity Center throttle limitsOIDC service request quotasAdditional quotas
@@ -62,0 +63,10 @@ SCIM APIs | [SCIM APIs](https://docs.aws.amazon.com/singlesignon/latest/develope
+## OIDC service request quotas
+
+Resource | Default value (requests per second) | Can be increased  
+---|---|---  
+Request rate from a remote address to register a public OAuth client Applies to: [ RegisterClient ](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_RegisterClient.html) | 20 | Yes  
+Request rate from a public client registered with the OIDC service Applies to: [ CreateToken](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_CreateToken.html), [ StartDeviceAuthorization ](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_StartDeviceAuthorization.html) | 80 | Yes  
+Request rate from all public clients registered with the same IAM Identity Center instance Applies to: [ CreateToken ](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_CreateToken.html) | 250 | Yes  
+Request rate from an IAM Identity Center application registered with the IAM Identity Center instance Applies to: [ CreateTokenWithIAM ](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_CreateTokenWithIAM.html) | 80 | Yes  
+Token generation rate from all IAM Identity Center applications registered with the same IAM Identity Center instance with JWT Bearer grant Applies to: [ CreateTokenWithIAM ](https://docs.aws.amazon.com/singlesignon/latest/OIDCAPIReference/API_CreateTokenWithIAM.html) | 10 | Contact AWS Support  
+