Authlib: OpenID implicit grant checks raw scope instead of allowed scope before issuing ID tokens
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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| Authlib | Authlib |
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| Source | ID | Title |
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Github GHSA |
GHSA-q686-2qmg-hqc7 | Authlib: OpenID implicit grant checks raw scope instead of allowed scope before issuing ID tokens |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.162% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:authlib:authlib:*:*:*:*:*:*:*:* |
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| Metrics |
ssvc
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| Weaknesses | CWE-807 | |
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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 1.9.0, OpenIDImplicitGrant.validate_authorization_request() checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client permitted an ID token response type but not the openid scope can add openid to the request, obtain user consent, and receive a signed ID token containing the user's subject and allowed profile claims. Authorization code flow and deployments that allow openid for every client permitted an ID token response are not affected. In authlib/oidc/core/grants/implicit.py, OpenIDImplicitGrant.validate_authorization_request() checks request.payload.scope instead of the filtered request.scope. This issue is fixed in version 1.9.0. | |
| Title | Authlib: OpenID implicit grant checks raw scope instead of allowed scope before issuing ID tokens | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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