Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-r95x-qfjj-fjj2 Authlib OIDC Implicit/Hybrid Authorization Vulnerable to Open Redirect
Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Wed, 27 May 2026 19:30:00 +0000

Type Values Removed Values Added
Description Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1.
Title Authlib: Open Redirect in Authlib OIDC Implicit/Hybrid Authorization
Weaknesses CWE-601
CWE-863
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-27T19:20:44.122Z

Reserved: 2026-05-07T16:20:08.660Z

Link: CVE-2026-44681

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-27T20:16:37.463

Modified: 2026-05-27T20:16:37.463

Link: CVE-2026-44681

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T21:00:14Z

Weaknesses