CVE-2026-64652
GitHub CLI partially discloses authentication tokens in `gh auth status` output
Impact
GitHub CLI (gh) is GitHub's official command line tool. Prior to version 2.97.0, gh auth status masked only the characters after the last underscore in certain fine-grained personal access tokens and GitHub App tokens. As a result, part of an affected token could appear in terminal or CI output that is captured or shared. Authenticated users are affected if they ran gh auth status (without the --show-token flag) with a token type whose format contains an underscore after the prefix. This includes fine-grained personal access tokens (github_pat_*) and GitHub App installation and user access tokens (ghs_*, ghu_*; for example, ghs_<APPID>_<JWT>), as well as the Actions GITHUB_TOKEN. Classic tokens such as gho_* and ghp_* have an underscore-free body and are not affected. This issue is fixed in version 2.97.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/cli/cli/v2 | < 2.97.0 | 2.97.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-cg6r-mpgc-h9mm
- https://github.com/cli/cli/security/advisories/GHSA-cg6r-mpgc-h9mm
- https://nvd.nist.gov/vuln/detail/CVE-2026-64652
- https://github.com/cli/cli/commit/3f6a16a9f8c7fe9676aa8d8f47b399310dd231c3
- https://github.com/cli/cli/releases/tag/v2.97.0