CVE-2026-9312

May 27, 2026, 12:16 a.m.

9.2
Critical

Description

A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to send crafted requests to internal services by exploiting insufficient input validation in an upload endpoint. By injecting path traversal content into request parameters, an attacker could bypass the intended request flow and redirect internal API calls, potentially accessing internal services and exposing sensitive credentials. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.16.20, 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.1. This vulnerability was reported via the GitHub Bug Bounty program.

Product(s) Impacted

Vendor Product Versions
Github
  • Github Enterprise Server
  • <3.22, 3.16.20, 3.17.17, 3.18.11, 3.19.8, 3.20.4, 3.21.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-918
Server-Side Request Forgery (SSRF)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a github github_enterprise_server <3.22 / / / / / / /
a github github_enterprise_server 3.16.20 / / / / / / /
a github github_enterprise_server 3.17.17 / / / / / / /
a github github_enterprise_server 3.18.11 / / / / / / /
a github github_enterprise_server 3.19.8 / / / / / / /
a github github_enterprise_server 3.20.4 / / / / / / /
a github github_enterprise_server 3.21.1 / / / / / / /

References

https://docs.github.com/en/[email protected]/admin/release-notes#3.16.20
https://docs.github.com/en/[email protected]/admin/release-notes#3.17.17
https://docs.github.com/en/[email protected]/admin/release-notes#3.18.11
https://docs.github.com/en/[email protected]/admin/release-notes#3.19.8
https://docs.github.com/en/[email protected]/admin/release-notes#3.20.4
https://docs.github.com/en/[email protected]/admin/release-notes#3.21.1

Tags

CWE-918
[email protected]
2026-05-27
CVE-2026-9312

CVSS Score

9.2 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: May 27, 2026, 12:16 a.m.
Last Modified: May 27, 2026, 12:16 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.