CVE-2026-7541— Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint
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I. Basic Information for CVE-2026-7541
Vulnerability Information
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Vulnerability Title
Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause service disruption by sending crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint. The endpoint parsed user-controlled JSON request bodies without size or depth limits, causing excessive CPU and memory consumption. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18. This vulnerability was reported via the GitHub Bug Bounty program.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
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 3.21之前版本存在安全漏洞，该漏洞源于解析用户控制的JSON请求体时未设置大小或深度限制，可能导致未经身份验证的攻击者通过发送带有深度嵌套JSON有效载荷的特制请求，造成服务中断。以下版本受到影响：3.20.2之前版本、3.19.6之前版本、3.18.9之前版本、3.17.15之前版本和3
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 ~ 3.16.17 | - |
II. Public POCs for CVE-2026-7541
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|---|
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Same Patch Batch · GitHub · 2026-05-07 · 4 CVEs total
| CVE-2026-6736 | Authentication bypass vulnerability in GitHub Enterprise Server allowed creation of local | |
| CVE-2026-8106 | Reflected HTML injection vulnerability in GitHub Enterprise Server Management Console logi | |
| CVE-2026-8034 | Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via |
IV. Related Vulnerabilities
Same product: Enterprise Server
- CVE-2026-8106
Reflected HTML injection vulnerability in GitHub Enterprise - CVE-2026-8034
Server-side request forgery vulnerability in GitHub Enterpri - CVE-2026-6736
Authentication bypass vulnerability in GitHub Enterprise Ser - CVE-2026-5845
Improper authorization fallback allows scoped user-to-server - CVE-2026-3307
Authorization bypass in GitHub Enterprise Server secret scan
Same vendor: GitHub
- CVE-2026-8106
Reflected HTML injection vulnerability in GitHub Enterprise - CVE-2026-8034
Server-side request forgery vulnerability in GitHub Enterpri - CVE-2026-6736
Authentication bypass vulnerability in GitHub Enterprise Ser - CVE-2026-5845
Improper authorization fallback allows scoped user-to-server - CVE-2026-3307
Authorization bypass in GitHub Enterprise Server secret scan
Same weakness: CWE-770
- CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42189
Russh: Pre-auth DoS via unbounded allocation in keyboard-int - CVE-2026-42793
Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali
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