CVE•Published 2026-05-27•Modified 2026-06-02•0 articles on news•5 live references•NVD data

CVE-2026-44681Authlib · Authlib

Vulnerability data via NVD (ingested)

CVSS v3.1

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-601URL Redirection to Untrusted Site ('Open Redirect')CWE-863Incorrect Authorization

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.

Timeline

Published 2026-05-27

Modified 2026-06-02

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-44681

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Authlib Authlib"

All exposed Authlib Authlib instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Authlib"

HTTP body or banner mentions "Authlib" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-44681