Description
An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signup endpoint did not properly enforce the authentication restriction, allowing account creation and session establishment without identity provider validation. The created account was limited to the default base permissions configured on the instance. Exploitation required network access to a GHES instance configured with an external authentication provider. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18.
INFO
Published Date :
2026-05-07T21:14:33.490Z
Last Modified :
2026-05-07T21:27:45.553Z
Source :
GitHub_P
AFFECTED PRODUCTS
The following products are affected by CVE-2026-6736 vulnerability.
| Vendors | Products |
|---|---|
| Github |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6736.
