Authlib: Open Redirect in Authlib OIDC Implicit/Hybrid Authorization_CVE-2026-44681

6.1 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Basic Information

ID CVE-2026-44681

Source GitHub_M

Published May 27, 2026 at 19:20

Affected Product

Vendor authlib

Product authlib

Version < 1.6.12

Affected Versions authlib authlib < 1.6.12
authlib authlib >= 1.7.0, < 1.7.1

CWE Classification

CWE-601 CWE-863

References

github.com /authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2

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