Open Redirect Affecting python-authlib package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.26% (16th percentile)

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  • Snyk IDSNYK-DEBIAN13-PYTHONAUTHLIB-17431924
  • published24 Jun 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-41479  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 python-authlib.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-authlib package and not the python-authlib package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1