cvedb.io
CVE-2026-48501
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-05-29T16:16:31.497 · Last modified 2026-06-17T10:55:03.147

Summary

GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.93.0, GitHub CLI incorrectly includes authorization header in API requests to TUF repository mirrors via gh attestation, gh release verify, and gh release verify-asset commands. The CLI uses a shared HTTP client with an authentication layer that automatically attaches tokens to outgoing requests. This layer lacks accurate host detection and can incorrectly attribute the target host, providing it with a token it should never receive. Specifically, the host normalization logic collapses any *.github.com subdomain to github.com, so a request to tuf-repo.github.com (a GitHub Pages site, not a GitHub API endpoint) is treated as a request to github.com and receives the user's github.com token. For hosts that don't match github.co

Affected products

github — cli

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.