python-authlib: Authlib is a Python library which builds OAuth and OpenID Connect servers
CVE-2026-41479 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-41479, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-Authlib · opensuse-leap 16.0 | 1.5.2-bp160.4.1 | OPENSUSE-SU-2026:21795-1 | Sep 3, 2026 |
| python-Authlib · sles 15.7 | 1.3.1-150600.3.30.1 | SUSE-SU-2026:4111-1 | Sep 9, 2026 |
| python-authlib · Debian 14 | 1.7.2-1 | DEBIAN-CVE-2026-41479 | Jun 24, 2026 |
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