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    CVE-2025-68158

    Authlib is a Python library which builds OAuth and OpenID Connect servers. In versions 1.0.0 through 1.6.5, cache-backed state/request-token storage is not tied to the initiating user session, so CSRF is possible for any attacker that has a valid state (easily obtainable via an attacker-initiated authentication flow). When a cache is supplied to the OAuth client registry, FrameworkIntegration.set_state_data writes the entire state blob under _state_{app}_{state}, and get_state_data ignores the caller’s session altogether. This issue has been patched in version 1.6.6.

    Published:Jan 8, 2026
    Last Modified:Mar 30, 2026
    EPS:Jan 8, 2026
    EPSS Score:0.00025
    CVSS Score:5.7

    Affected Products

    Vendor
    Authlib
    Product
    Authlib

    Exploits

    https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523

    Related CVEs

    CVE-2026-41479 (CVSS 5.4) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.10 and 1.7.1, Authlib'…
    CVE-2026-44681 (CVSS 6.1) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unaut…
    CVE-2026-41425 (CVSS 5.4) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF p…
    CVE-2026-28498 (CVSS 8.2) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-l…
    CVE-2026-28490 (CVSS 8.3) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a cryptogra…
    CVE-2026-27962 (CVSS 9.1) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Heade…
    CVE-2026-28802 (CVSS 7.7) — Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before versio…
    CVE-2025-62706 (CVSS 6.5) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s J…
    CVE-2025-61920 (CVSS 7.5) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s J…
    CVE-2025-59420 (CVSS 7.5) — Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.4, Authlib’s J…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High