CVE-2026-44681
Last modified
CVE-2026-44681 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Authlib | Authlib | < 1.6.12 |
| Authlib | Authlib | 1.7.0 |
References
- https://github.com/authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2Exploit, Mitigation, Vendor Advisory
- https://github.com/authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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