CVE-2026-3306— Improper authorization in GitHub Projects allows modification of issue and pull request metadata without repository write access
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I. Basic Information for CVE-2026-3306
Vulnerability Information
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Vulnerability Title
Improper authorization in GitHub Projects allows modification of issue and pull request metadata without repository write access
Source: NVD (National Vulnerability Database)
Vulnerability Description
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already existed, column value updates were applied without verifying the actor's repository write permissions. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
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存在安全漏洞，该漏洞源于授权不当，可能导致具有仓库读取权限和项目写入权限的用户通过项目修改问题和拉取请求元数据。
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 | 3.14.0 ~ 3.14.23 | - |
II. Public POCs for CVE-2026-3306
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|---|
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Same Patch Batch · GitHub · 2026-03-10 · 4 CVEs total
| CVE-2026-3854 | Remote code execution via git push option injection in GitHub Enterprise Server | |
| CVE-2026-3582 | Incorrect Authorization in GitHub Enterprise Server allows access to issue and commit sear | |
| CVE-2026-2266 | Improper neutralization of input vulnerability was identified in GitHub Enterprise Server |
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-2026-7541
Denial of service vulnerability in GitHub Enterprise Server - CVE-2026-6736
Authentication bypass vulnerability in GitHub Enterprise Ser - CVE-2026-5845
Improper authorization fallback allows scoped user-to-server
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-2026-7541
Denial of service vulnerability in GitHub Enterprise Server - CVE-2026-6736
Authentication bypass vulnerability in GitHub Enterprise Ser - CVE-2026-5845
Improper authorization fallback allows scoped user-to-server
Same weakness: CWE-639
- CVE-2026-8196
JeecgBoot mLogin Endpoint LoginController.java authorization - CVE-2026-42291
SysReptor: Read-write access to personal notes by sharing-li - CVE-2026-44400
MailEnable Enterprise Premium < 10.55 Authorization Bypass v - CVE-2026-42279
solidtime: Time entry update endpoint allows cross-organizat - CVE-2026-42277
Onyx: IDOR in /chat/file/{file_id} allows any authenticated
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