Prevent GitHub CLI and extensions from executing arbitrary commands from compromised GitHub Enterprise Server

Vulnerability Description

go-gh is a collection of Go modules to make authoring GitHub CLI extensions easier. A security vulnerability has been identified in versions prior to 2.12.1 where an attacker-controlled GitHub Enterprise Server could result in executing arbitrary commands on a user's machine by replacing HTTP URLs provided by GitHub with local file paths for browsing. In `2.12.1`, `Browser.Browse()` has been enhanced to allow and disallow a variety of scenarios to avoid opening or executing files on the filesystem without unduly impacting HTTP URLs. No known workarounds are available other than upgrading.

References

• https://github.com/cli/go-gh/security/advisories/GHSA-g9f5-x53j-h563
• https://github.com/cli/go-gh/commit/a08820a13f257d6c5b4cb86d37db559ec6d14577
• https://github.com/cli/go-gh/blob/61bf393cf4aeea6d00a6251390f5f67f5b67e727/pkg/browser/browser.go