PT-2026-38595 · Github · Github Enterprise Server

Maksyche · Published 2026-05-07 · Updated 2026-05-10 · CVE-2026-8106

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions 3.19.1 through 3.19.5 GitHub Enterprise Server versions 3.20.0 through 3.20.1

Description A reflected HTML injection issue exists in the Management Console login page. The redirect to query parameter on the '/setup/unlock' endpoint is reflected into an HTML attribute without proper sanitization. This allows an attacker to inject a form element to capture administrator credentials if an administrator clicks a crafted link and enters their credentials.

Recommendations Update versions 3.19.1 through 3.19.5 to version 3.19.6. Update versions 3.20.0 through 3.20.1 to version 3.20.2.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8106

Affected Products

Github Enterprise Server

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-8106 · Security Note
• https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2 · Vendor Advisory
• https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6 · Vendor Advisory
• https://twitter.com/CVEnew/status/2053559186856788034 · Twitter Post
• https://t.me/CVEtracker/53044 · Telegram Post