CVE-2026-59831
MEDIUMGitHub CLI `gh codespace jupyter` could allow remote code execution when connecting to a malicious Codespace
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/cli/cli/security/advisories/GHSA-8cg3-r6g9-fpg2
X_Refsource_Misc x_refsource_misc
https://github.com/cli/cli/commit/b300f2ec7ec9dc9addc39b2ad88c54097ded7ca0
X_Refsource_Misc x_refsource_misc
https://github.com/cli/cli/releases/tag/v2.96.0
Scores
CVSS v3
4.4
EPSS
0.0020
EPSS Percentile
9.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-829
Status
published
Products (1)
cli/cli
>= 2.10.0, < 2.96.0
Published
Jul 09, 2026
Tracked Since
Jul 10, 2026