Description
OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 3.3.0 until 4.0.1, OAuthLib's RFC 8628 device workflow does not require DeviceCodeGrant.validate_token_request to check that the device_code parameter is present and valid. A caller whose client request is accepted by the configured validator and who knows a valid client ID enabled for the device workflow can submit a missing or bogus device code to the token endpoint and obtain a bearer token without completing device authorization. This issue is fixed in version 4.0.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| oauthlib | oauthlib | >= 3.3.0, < 4.0.1 | — |
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-oauthlib | No fix yet | — |
| Debian 13 | python-oauthlib | No fix yet | — |
| Debian 12 | python-oauthlib | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | python-oauthlib | No fix yet | — |
| Ubuntu 26.04 LTS | python-oauthlib | No fix yet | — |
| Ubuntu 24.04 LTS | python-oauthlib | No fix yet | — |
| Ubuntu 22.04 LTS | python-oauthlib | No fix yet | — |
| Ubuntu 20.04 LTS | python-oauthlib | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | python-oauthlib | No fix yet | — |
| Ubuntu 16.04 LTS | python-oauthlib | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-oauthlib | 4.0.1-1.1 | openSUSE-SU-2026:12520-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | dask-kubernetes | 2026.3.0-r20 | — |
| Wolfi rolling | datadog-agent-7.78-core-integrations | 7.78.4-r28 | — |
| Wolfi rolling | datadog-agent-7.79-core-integrations | 7.79.2-r29 | — |
| Wolfi rolling | datadog-agent-7.80-core-integrations | 7.80.4-r30 | — |
| Wolfi rolling | datadog-agent-7.81-core-integrations | No fix yet | — |
| Wolfi rolling | ggshield | 1.55.0-r6 | — |
| Wolfi rolling | kubeflow-jupyter-web-app | 1.10.0-r31 | — |
| Wolfi rolling | kubeflow-pipelines-apiserver | 2.18.0-r4 | — |
| Wolfi rolling | kubeflow-pipelines-visualization-server | 2.18.0-r3 | — |
| Wolfi rolling | kubeflow-volumes-web-app | 1.10.0-r30 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | oauthlib | >= 3.3.0, < 4.0.1 | 4.0.1 | GHSA-3jp2-3mrg-2vxc |
Advisories 1
- openSUSE-SU-2026:12520-1 python313-oauthlib-4.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Nov 11, 2026