CVE-2026-44681
Authlib: Open Redirect in Authlib OIDC Implicit/Hybrid Authorization
MEDIUM 6.1EPSS 0.3%
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.
- Affected
- authlib
- CVSS v3.1 GITHUB
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.29% chance of exploitation in the next 30 days, 20th percentile
- Published
- 2026-05-27
- Updated
- 2026-06-02