CVE-2026-8106: medium-severity vulnerability in GitHub Enterprise Server
Reflected HTML injection vulnerability in GitHub Enterprise Server Management Console login page allowed credential theft
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
GitHub · Enterprise ServerRelated CVEs — GitHub Enterprise Server
In the same product, most dangerous first.
CVE-2024-0200HIGHUnsafe Reflection in Github Enterprise Server leading to Command InjectionEPSS 71.7%CVE-2024-0507MEDIUMPrivilege Escalation by Code Injection in the Management Console in GitHub Enterprise ServerEPSS 65.8%CVE-2026-3854HIGHRemote code execution via git push option injection in GitHub Enterprise ServerEPSS 41.9%CVE-2024-9487CRITICALAn Improper Verification of Cryptographic Signature vulnerability was identified in GitHub Enterprise Server that allowed SAML SSO authentication to be bypassed when the encrypted assertions feature was enabledEPSS 25.6%CVE-2026-9312CRITICALServer-Side Request Forgery vulnerability in GitHub Enterprise Server allowed access to internal services via path traversal in upload endpointEPSS 9.2%CVE-2024-1374CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.6%