{"id":"CVE-2026-64653","aliases":["GHSA-4fjg-2h4q-fwg3","GO-2026-6765"],"url":"https://o3.security/vulnerability/CVE-2026-64653","summary":"GitHub CLI: Unescaped variable components in request URLs could allow path traversal","details":"### Summary\n\nA path traversal vulnerability has been identified in the GitHub CLI where some HTTP request URLs, REST API calls in particular, were built without properly escaping their variable path components. A value containing URL path metacharacters can alter the request path and cause `gh` to address a different resource than intended.\n\n### Details\n\nNot all request URLs in the codebase were built with proper escaping of their variable path components. When a component is interpolated into the path without percent encoding, and that component contains URL path metacharacters, it breaks out of its intended segment and changes the effective request path.\n\nIn `2.97.0`, request URLs are constructed in a safe manner, so a variable component can no longer escape its intended segment.\n\n### Impact\n\nAn attacker who can control a value that flows into a request path can cause `gh` to send the request to a different API endpoint than intended. This can lead the CLI to read or act on a resource other than the one the user meant to target.\n\n### Remediation and Mitigation\n\n1. Upgrade `gh` to `2.97.0`.\n2. Be cautious when running `gh` against untrusted repositories or inputs whose names you do not control.","published":"2026-08-06T17:51:54.344Z","modified":"2026-10-21T02:58:57.148963139Z","cvss":null,"epss":{"score":0.00511,"percentile":0.42403,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/cli/cli/v2","fixedVersion":"2.97.0"}],"fix":{"url":"https://github.com/cli/cli/commit/0c2eea6338a2323cfff000160b9b5a56a38d2a06","label":"cli/cli@0c2eea6"},"references":[{"type":"WEB","url":"https://github.com/cli/cli/releases/tag/v2.97.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64653.json"},{"type":"ADVISORY","url":"https://github.com/cli/cli/security/advisories/GHSA-4fjg-2h4q-fwg3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64653"},{"type":"FIX","url":"https://github.com/cli/cli/commit/0c2eea6338a2323cfff000160b9b5a56a38d2a06"},{"type":"PACKAGE","url":"https://github.com/cli/cli"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:57.148963139Z"}}