CVE-2026-44681
Authlib: Open Redirect in Authlib OIDC Implicit/Hybrid Authorization
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
27 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
authlib · authlibWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →