CVE-2026-59831
Medium
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.
SeverityMedium
CVSS4.4
Exploit probability—
ProductCli
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-829CWE-829
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cli cli | >= 2.10.0, < 2.96.0 | — |
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