CVE-2026-59831— GitHub CLI `gh codespace jupyter` could allow remote code execution when connecting to a malicious Codespace
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-59831
Vulnerability Information
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Vulnerability Title
GitHub CLI `gh codespace jupyter` could allow remote code execution when connecting to a malicious Codespace
Source: CVE Program / CVE List V5
Vulnerability Description
GitHub CLI (gh) is GitHub’s official command line tool. From 2.10.0 through 2.95.0, connecting to a malicious Codespace with gh codespace jupyter can allow command execution because the command opens a JupyterLab URL supplied by a process inside the Codespace without validating that it is a loopback HTTP or HTTPS address, allowing a crafted vscode:// or vscode-insiders:// URL to be handed to VS Code. This issue is fixed in version 2.96.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
从非可信控制范围包含功能例程
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub CLI (gh 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub CLI是GitHub CLI公司开源的一个命令行上的 GitHub。 GitHub CLI存在软件供应链问题漏洞，该漏洞源于连接恶意Codespace时未验证回环HTTP或HTTPS地址，可能导致命令执行。
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
II. Public POCs for CVE-2026-59831
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Patches & Fixes for CVE-2026-59831 (1)
Vendor Advisories for CVE-2026-59831 (1)
Vendor Pages for CVE-2026-59831 (1)
- 🔗 Release GitHub CLI 2.96.0 · cli/cli · GitHubx_refsource_MISC
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