Authorizer is an open-source, self-hostable authentication and authorization server. Prior to version 2.2.1, the `/authorize` endpoint accepts any `redirect_uri` without validating it against `AllowedOrigins`. When `response_type=token` or `response_type=id_token`, the server appends `access_token`, `id_token`, and `refresh_token` as query parameters and issues a 302 redirect to the attacker-supplied URL. An unauthenticated attacker can obtain the required `client_id` from the public `/graphql?query={meta{client_id}}` endpoint. A partial fix was applied in v2.0.1 to other handlers (`oauth_login`, `verify_email`, `magic_link_login`, `forgot_password`, `invite_members`, `oauth_callback`) but `/authorize` was not included. Version 2.2.1 contains a more complete fix.
Metrics
Affected Vendors & Products
References
History
Tue, 15 Sep 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Sun, 13 Sep 2026 20:30:00 +0000
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| First Time appeared |
Authorizerdev
Authorizerdev authorizer |
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| Vendors & Products |
Authorizerdev
Authorizerdev authorizer |
Fri, 11 Sep 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | Authorizer is an open-source, self-hostable authentication and authorization server. Prior to version 2.2.1, the `/authorize` endpoint accepts any `redirect_uri` without validating it against `AllowedOrigins`. When `response_type=token` or `response_type=id_token`, the server appends `access_token`, `id_token`, and `refresh_token` as query parameters and issues a 302 redirect to the attacker-supplied URL. An unauthenticated attacker can obtain the required `client_id` from the public `/graphql?query={meta{client_id}}` endpoint. A partial fix was applied in v2.0.1 to other handlers (`oauth_login`, `verify_email`, `magic_link_login`, `forgot_password`, `invite_members`, `oauth_callback`) but `/authorize` was not included. Version 2.2.1 contains a more complete fix. | |
| Title | Authorizer: Unvalidated redirect_uri in /authorize leaks OAuth2 tokens to attacker-controlled URL | |
| Weaknesses | CWE-601 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-11T18:41:52.963Z
Updated: 2026-09-15T16:33:01.397Z
Reserved: 2026-06-11T18:24:35.098Z
Link: CVE-2026-54072
Updated: 2026-09-15T16:32:03.247Z
Status : Deferred
Published: 2026-09-11T19:17:42.663
Modified: 2026-09-30T17:51:56.193
Link: CVE-2026-54072
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