Karapace is an open-source implementation of Kafka REST and Schema Registry. Versions 5.0.0 and 5.0.1 contain an authentication bypass vulnerability when configured to use OAuth 2.0 Bearer Token authentication. If a request is sent without an Authorization header, the token validation logic is skipped entirely, allowing an unauthenticated user to read and write to Schema Registry endpoints that should otherwise be protected. This effectively renders the OAuth authentication mechanism ineffective. This issue is fixed in version 5.0.2.
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Workaround
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Fri, 03 Oct 2025 21:30:00 +0000
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Description | Karapace is an open-source implementation of Kafka REST and Schema Registry. Versions 5.0.0 and 5.0.1 contain an authentication bypass vulnerability when configured to use OAuth 2.0 Bearer Token authentication. If a request is sent without an Authorization header, the token validation logic is skipped entirely, allowing an unauthenticated user to read and write to Schema Registry endpoints that should otherwise be protected. This effectively renders the OAuth authentication mechanism ineffective. This issue is fixed in version 5.0.2. | |
Title | Karapace is vulnerable to Authentication Bypass | |
Weaknesses | CWE-288 CWE-306 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-03T21:12:24.471Z
Reserved: 2025-09-29T20:25:16.180Z
Link: CVE-2025-61673

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Status : Received
Published: 2025-10-03T22:15:32.213
Modified: 2025-10-03T22:15:32.213
Link: CVE-2025-61673

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