SB2026070340 - Input validation error in GitHub CLI
Published: July 3, 2026
Security Bulletin ID
SB2026070340
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: N/A)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper input validation in the gh codespace jupyter command when opening the Jupyter server URL returned by a process inside the Codespace. A remote user can supply a crafted vscode:// URL to execute arbitrary code.
User interaction is required to accept a VS Code open URL or Workspace Trust prompt.
Remediation
Install update from vendor's website.