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CVE-2026-9312— Server-Side Request Forgery vulnerability in GitHub Enterprise Server allowed access to internal services via path traversal in upload endpoint

Quick assessment

Affected
GitHub Enterprise Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitHub Enterprise Server是美国GitHub开源的一个应用软件。提供一个将自己的GitHub实例设置为虚拟设备，从而提供可扩展，易于管理的平台。 GitHub Enterprise Server 3.22之前版本存在安全漏洞，该漏洞源于上传端点输入验证不足，可能导致未经身份验证的攻击者通过注入路径遍历内容绕过请求流程并重定向内部API调用，从而访问内部服务并暴露敏感凭据。

AI Predicted 9.1 Difficulty: Easy EPSS 0.59% · P46

Affected Version Matrix 6

VendorProduct Version RangeStatus
GitHub Enterprise Server 3.16.0≤ 3.16.19 affected
3.17.0≤ 3.17.16 affected
3.18.0≤ 3.18.10 affected
3.19.0≤ 3.19.7 affected
3.20.0≤ 3.20.3 affected
3.21.0< 3.21.1 affected
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I. Basic Information for CVE-2026-9312

Vulnerability Information
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Vulnerability Title
Server-Side Request Forgery vulnerability in GitHub Enterprise Server allowed access to internal services via path traversal in upload endpoint
Source: CVE Program / CVE List V5
Vulnerability 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 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.2. This vulnerability was reported via the GitHub Bug Bounty program.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub Enterprise Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub Enterprise Server是美国GitHub开源的一个应用软件。提供一个将自己的GitHub实例设置为虚拟设备，从而提供可扩展，易于管理的平台。 GitHub Enterprise Server 3.22之前版本存在安全漏洞，该漏洞源于上传端点输入验证不足，可能导致未经身份验证的攻击者通过注入路径遍历内容绕过请求流程并重定向内部API调用，从而访问内部服务并暴露敏感凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitHub Enterprise Server 3.16.0 ~ 3.16.19 -

II. Public POCs for CVE-2026-9312

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III. Intelligence Information for CVE-2026-9312

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Vendor Pages for CVE-2026-9312 (4)

IV. Related Vulnerabilities

Same product: Enterprise Server
Same vendor: GitHub
Same weakness: CWE-918

V. Comments for CVE-2026-9312

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