Description

A reflected HTML injection vulnerability was identified in the GitHub Enterprise Server Management Console login page that could allow credential theft. The redirect_to query parameter on the /setup/unlock endpoint was reflected into an HTML attribute without proper sanitization, enabling an attacker to inject a form element that could capture administrator credentials. Exploitation required an administrator to click a crafted link and enter their credentials. This vulnerability affected GitHub Enterprise Server versions 3.19.1 through 3.19.5 and 3.20.0 through 3.20.1, and was fixed in versions 3.19.6 and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.

INFO

Published Date :

2026-05-07T21:18:59.259Z

Last Modified :

2026-05-08T13:07:33.764Z

Source :

GitHub_P
AFFECTED PRODUCTS

The following products are affected by CVE-2026-8106 vulnerability.

Vendors Products
Github
  • Enterprise Server
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-8106.

URL Resource
https://docs.github.com/en/[email protected]/admin/release-notes#3.19.6 cve-icon cve-icon
https://docs.github.com/en/[email protected]/admin/release-notes#3.20.2 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability