| 제목 | YunaiV yudao-cloud up to 2026.01 Authentication Bypass by Primary Weakness |
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| 설명 | A critical authentication bypass vulnerability exists in yudao-cloud `OAuth2TokenServiceImpl.java`. The vulnerability allows an attacker to use a `refresh_token` directly as an `access_token` to authenticate API requests, effectively bypassing the intended access token authentication mechanism.
In the OAuth 2.0 authentication framework, `access_token` and `refresh_token` serve different purposes:
- **`access_token`**: Short-lived token used for API authentication
- **`refresh_token`**: Long-lived token used to obtain new access tokens
This vulnerability breaks the security separation between these two token types. |
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| 원천 | ⚠️ https://github.com/9str0IL/CVE/issues/1 |
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| 사용자 | 9str0il (UID 97218) |
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| 제출 | 2026. 04. 09. AM 11:11 (2 개월 ago) |
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| 모더레이션 | 2026. 05. 02. AM 10:39 (23 days later) |
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| 상태 | 수락 |
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| VulDB 항목 | 360832 [YunaiV yudao-cloud 까지 2026.01 OAuth2TokenServiceImpl.java getAccessToken 약한 인증] |
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| 포인트들 | 20 |
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