CVE-2026-59831
Published:July 09, 2026
Updated:August 04, 2026
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.
Affected Packages
https://github.com/cli/cli.git (GITHUB):
Affected version(s) >=v2.10.0 <v2.96.0Fix Suggestion:
Update to version v2.96.0github.com/cli/cli (GO):
Affected version(s) >=v2.10.0 <v2.96.0Fix Suggestion:
Update to version v2.96.0github.com/cli/cli/v2 (GO):
Affected version(s) >=v2.10.0 <v2.96.0Fix Suggestion:
Update to version v2.96.0Related Resources (5)
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Contact UsCVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Inclusion of Functionality from Untrusted Control Sphere
EPSS
Base Score:
0.26