Medium [CVE-2026-72924] Forwarded services exposed on all network interfaces by default

GitHub CLI (gh) is GitHub's official command line tool. Versions 2.28.0 through 2.97.0 bind the local listener created by gh codespace ports forward to all available network interfaces by default.

While port forwarding is active, a service in a Codespace can therefore become reachable through the user's non-loopback local IP addresses by other hosts that can route to the user's machine. This behavior does not change the GitHub-side visibility of the Codespaces port.

Instead, it exposes the forwarded service through a wildcard-bound listener on the user's local machine, even when the source Codespaces port remains private. Exploitation requires a network-adjacent attacker to reach the victim's machine while forwarding is active.

This issue is fixed in version 2.98.0. This can lead to unauthorized access to internal services.

In standard Red Hat deployments, the GitHub CLI tool is used interactively rather than as a persistent background daemon, limiting exposure to active developer sessions. When forwarding is executed, the tool binds to all local network adapters instead of strictly to loopback interfaces, exposing remote services to adjacent network hosts.

Systems not utilizing the Codespaces port redirection feature or protected by host firewalls do not expose services to outside hosts. Red Hat severity: Moderate — CVSS 4.6 (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).