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CVE-2026-44681

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CVE-2026-44681

Published: May 27, 2026

Modified: Jun 2, 2026

PUBLISHED

CVSS v3.1

6.1

MEDIUM

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.

VendorProductVersions

authlib

authlib

affected
< 1.6.12
affected
>= 1.7.0, < 1.7.1

Weaknesses (CWE)

CWE-601
CWE-863

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

References

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