CVE-2026-77987

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987 GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987 GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987

A server-side request forgery (SSRF) vulnerability exists in the notebook viewer of GitHub Enterprise Server (versions 3.17 through 3.22). The root cause is the failure to validate the port of user-supplied URLs, despite validating the scheme and host. This allows requests to internal services on...

EUVD-2026-84872

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

PT-2026-97052

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions 3.17 through 3.22 Description A server-side request forgery SSRF issue exists in the notebook viewer. While the system validates the scheme and host of a user-supplied URL, it fails to validate the port. This...

CVE-2026-77987: Server-Side Request Forgery (SSRF)

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-5921

A server-side request forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was disabled, the notebo...

CVE-2026-8034

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

EUVD-2026-28464

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

CVE-2026-8034

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

CVE-2026-8034

CVE-2026-8034 is a server-side request forgery (SSRF) vulnerability in the GitHub Enterprise Server notebook viewer. The issue stems from URL parser confusion between the validation layer and the HTTP request library, where hostname validation uses a different parser than the request library, all...

CVE-2026-8034

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

CVE-2026-8034 Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via URL parser confusion

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

CVE-2026-8034 Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via URL parser confusion

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

PT-2026-38594

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.21 Description A server-side request forgery SSRF issue exists in the notebook viewer. This occurs due to URL parser confusion between the validation layer and the HTTP request library, where the...

CVE-2026-8034: Server-Side Request Forgery (SSRF)

A server-side request forgery SSRF vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a differe...

CVE-2026-5921 Server-Side Request Forgery in GitHub Enterprise Server allowed extraction of sensitive environment variables via timing side-channel attack

A server-side request forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was disabled, the notebo...

CVE-2026-5921

A server-side request forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was disabled, the notebo...

PT-2026-34213

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.21 Description A server-side request forgery SSRF allows an attacker to extract sensitive environment variables from an instance via a timing side-channel attack against the notebook rendering...