Authlib OAuth 2.0 authorization endpoint open redirects to attacker-controlled redirect_uri on unsupported response_type
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| authlib | authlib | affected |
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Configuration 1 [-]
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| Authlib | Authlib |
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| Source | ID | Title |
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Github GHSA |
GHSA-w8p2-r796-3vmq | Authlib OAuth 2.0 has Open Redirect in Authorization API that allows attacker-controlled redirect_uri through unsupported response_type |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.257% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Authlib
Authlib authlib |
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| Vendors & Products |
Authlib
Authlib authlib |
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| Description | Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.10 and 1.7.1, Authlib's OAuth 2.0 authorization endpoint can be turned into an unauthenticated open redirect when a request uses an unsupported response_type and supplies an attacker-controlled redirect_uri. The vulnerable behavior happens before client lookup and before any redirect URI validation. As a result, an attacker does not need a valid client registration, an authenticated user, or any prior state. A single request to the authorization endpoint is enough to obtain a 302 Location response to an arbitrary attacker-controlled URL. This vulnerability is fixed in 1.6.10 and 1.7.1. | |
| Title | Authlib OAuth 2.0 authorization endpoint open redirects to attacker-controlled redirect_uri on unsupported response_type | |
| Weaknesses | CWE-601 | |
| References |
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| Metrics |
cvssV3_1
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