CVE-2026-64653: GitHub CLI: Unescaped variable components in request URLs could allow path traversal

Severity: medium (CVSS 5.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-06 · updated 2026-09-10
Weakness: CWE-22

Description

GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.97.0, some HTTP request URLs interpolate variable path components without percent encoding, allowing URL path metacharacters in attacker-controlled repository or resource values to make gh address a different API endpoint or resource than the user intended. This issue is fixed in version 2.97.0.

Affected products

cli: before 2.97.0

References

https://github.com/cli/cli/commit/0c2eea6338a2323cfff000160b9b5a56a38d2a06
https://github.com/cli/cli/releases/tag/v2.97.0
https://github.com/cli/cli/security/advisories/GHSA-4fjg-2h4q-fwg3

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