Description
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF protection on the cache feature in authlib.integrations.starlette_client.OAuth. This vulnerability is fixed in 1.6.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| authlib | authlib | < 1.6.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | python-authlib | 1.7.0-1 | — |
| Debian 13 | python-authlib | No fix yet | — |
| Debian 12 | python-authlib | 1.2.0-1+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | python-authlib | No fix yet | — |
| Ubuntu 25.10 | python-authlib | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | python-authlib | 1.6.7-1ubuntu0.1~esm1 | USN-8557-1 |
| Ubuntu Pro 24.04 LTS | python-authlib | 1.3.0-1ubuntu0.1~esm2 | USN-8557-1 |
| Ubuntu Pro 22.04 LTS | python-authlib | 0.15.5-1ubuntu0.1~esm2 | USN-8557-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 3 | python-Authlib | 1.3.1-150600.3.22.1 | SUSE-SU-2026:2968-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Authlib | 1.9.1-1.1 | openSUSE-SU-2026:12390-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | airflow-3 | 3.2.1-r0 | — |
| Wolfi rolling | open-webui | 0.8.12-r4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | authlib | < 1.6.11 | 1.6.11 | GHSA-jj8c-mmj3-mmgv |
Advisories 4
- WID-SEC-2026-3046 IBM Concert: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- openSUSE-SU-2026:12390-1 python313-Authlib-1.9.1-1.1 on GA media SUSE / openSUSE Security Updates · Nov 3, 2026
- USN-8557-1 python-authlib vulnerabilities Ubuntu Security Notices (USN) · Jul 17, 2026
- SUSE-SU-2026:2968-1 Security update for python-Authlib SUSE / openSUSE Security Updates · Jul 15, 2026