{"id":"GHSA-36p8-mvp6-cv38","summary":"Wrangler affected by OS Command Injection in `wrangler pages deploy`","details":"**Summary**\n\nA command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash` parameter is passed directly to a shell command without proper validation or sanitization, allowing an attacker with control of `--commit-hash` to execute arbitrary commands on the system running Wrangler.\n\n**Root cause**\n\nThe `commitHash` variable, derived from user input via the `--commit-hash` CLI argument, is interpolated directly into a shell command using template literals (e.g., ``execSync(`git show -s --format=%B ${commitHash}`)``). Shell metacharacters are interpreted by the shell, enabling command execution.\n\n**Impact**\n\nThis vulnerability is generally hard to exploit, as it requires `--commit-hash` to be attacker controlled. The vulnerability primarily affects CI/CD environments where `wrangler pages deploy` is used in automated pipelines and the `--commit-hash` parameter is populated from external, potentially untrusted sources. An attacker could exploit this to:\n\n- Run any shell command.\n- Exfiltrate environment variables.\n- Compromise the CI runner to install backdoors or modify build artifacts.\n\n**Mitigation**\n\n- Wrangler v4 users are requested to upgrade to Wrangler v4.59.1 or higher. \n- Wrangler v3 users are requested to upgrade to Wrangler v3.114.17 or higher. \n- Users on Wrangler v2 (EOL) should upgrade to a supported major version.\n\n**Credits**\n\nDisclosed responsibly by kny4hacker.","aliases":["CVE-2026-0933"],"modified":"2026-02-03T03:10:47.584951Z","published":"2026-01-21T23:00:35Z","database_specific":{"cwe_ids":["CWE-78"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-01-21T23:00:35Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-36p8-mvp6-cv38"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0933"},{"type":"WEB","url":"https://github.com/cloudflare/workers-sdk/commit/99b1f328a9afe181b49f1114ed47f15f6d25f0be"},{"type":"PACKAGE","url":"https://github.com/cloudflare/workers-sdk"},{"type":"WEB","url":"https://github.com/cloudflare/workers-sdk/releases/tag/wrangler%403.114.17"},{"type":"WEB","url":"https://github.com/cloudflare/workers-sdk/releases/tag/wrangler%404.59.1"}],"affected":[{"package":{"name":"wrangler","ecosystem":"npm","purl":"pkg:npm/wrangler"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.15"},{"fixed":"3.114.17"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-36p8-mvp6-cv38/GHSA-36p8-mvp6-cv38.json"}},{"package":{"name":"wrangler","ecosystem":"npm","purl":"pkg:npm/wrangler"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.59.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-36p8-mvp6-cv38/GHSA-36p8-mvp6-cv38.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N"}]}