{"id":"GHSA-p4wh-cr8m-gm6c","summary":"OpenClaw: shell-env trusted-prefix fallback allowed attacker-controlled binary execution via $SHELL","details":"### Summary\n`shell-env` fallback trusted prefix-based executable paths for `$SHELL`, allowing execution of attacker-controlled binaries in local/runtime-env influence scenarios.\n\n### Details\nIn affected versions, shell selection accepted either:\n1. a shell listed in `/etc/shells`, or\n2. any executable under hardcoded trusted prefixes (`/bin`, `/usr/bin`, `/usr/local/bin`, `/opt/homebrew/bin`, `/run/current-system/sw/bin`).\n\nThe selected shell was then executed as a login shell (`-l -c 'env -0'`) for PATH/environment probing.\n\nOn systems where a trusted-prefix directory is writable (for example common Homebrew layouts under `/opt/homebrew/bin`) and runtime `$SHELL` can be influenced, this enabled attacker-controlled binary execution in OpenClaw process context.\n\nThe fix removes the trusted-prefix executable fallback and now trusts only shells explicitly registered in `/etc/shells`; otherwise it falls back to `/bin/sh`.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `\u003e= 2026.2.22, \u003c= 2026.2.22-2`\n- Latest published vulnerable version: `2026.2.22-2`\n- Patched versions (released): `\u003e= 2026.2.23`\n\n### Fix Commit(s)\n- `ff10fe8b91670044a6bb0cd85deb736a0ec8fb55`\n\n### Release Process Note\nThis advisory sets `patched_versions` to the released version (`2026.2.23`).\nThis advisory now reflects released fix version `2026.2.23`.\n\nOpenClaw thanks @tdjackey for reporting.","aliases":["CVE-2026-22217"],"modified":"2026-06-08T23:30:14.508193814Z","published":"2026-03-03T21:36:16Z","database_specific":{"github_reviewed_at":"2026-03-03T21:36:16Z","nvd_published_at":"2026-03-18T02:16:23Z","cwe_ids":["CWE-184","CWE-829"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-p4wh-cr8m-gm6c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22217"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/ff10fe8b91670044a6bb0cd85deb736a0ec8fb55"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-arbitrary-binary-execution-via-shell-environment-variable-trusted-prefix-fallback"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2026.2.22"},{"fixed":"2026.2.23"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-p4wh-cr8m-gm6c/GHSA-p4wh-cr8m-gm6c.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"}]}