CVE-2025-68158
Fixed in a distro release EPSS <1%CVSS 5.7
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.
Products: authlib
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | authlib | 1.6.6 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | python-authlib | 1.2.0-1+deb12u1 |
| Debian 13 | python-authlib | 1.6.0-1+deb13u1 |
| Debian 14 | python-authlib | 1.6.6-1 |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-Authlib | 1.3.1-150600.3.14.1 |
| Ubuntu 25.10 | python-authlib | no fix |
| Ubuntu Pro 22.04 LTS | python-authlib | 0.15.5-1ubuntu0.1~esm1 |
| Ubuntu Pro 24.04 LTS | python-authlib | 1.3.0-1ubuntu0.1~esm1 |
| openSUSE Leap 15.6 | python-Authlib | 1.3.1-150600.3.14.1 |
| openSUSE Leap 16.0 | python-Authlib | 1.5.2-bp160.2.1 |
| openSUSE Tumbleweed | python-Authlib | 1.6.6-1.1 |