Home→Vulnerabilities→CVE-2026-8106
Disclosed

CVE-2026-8106

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.

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Exploitation Probability (EPSS)

Low Priority
0.03%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

2 events
May 7, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
May 11, 2026
Last Updated
Record updated with new analysis or tags.

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

Affected Products

1 Total
github/enterprise_serverAll Versions

References

https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6GitHub
Release NotesVendor Advisory
https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2GitHub
Release NotesVendor Advisory

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Check your domain or package.json for CVE-2026-8106 exposure.

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Vulnerability Details

CVSS Base Score
6.1/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published Date
May 7, 2026
Last Modified
May 11, 2026
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