medium6.1
CVE-2026-44681
Authlib is a Python library which builds OAuth and OpenID Connect servers.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | authlib | = 1.7.0 | 1.7.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Authlib | Authlib | before 1.6.12 Version 1.7.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-r95x-qfjj-fjj2
- https://github.com/authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2
- https://github.com/authlib/authlib/releases/tag/v1.6.12
- https://github.com/authlib/authlib/releases/tag/v1.7.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-44681
- https://github.com/pypa/advisory-database/tree/main/vulns/authlib/PYSEC-2026-188.yaml