{"id":"CVE-2026-22217","aliases":["GHSA-p4wh-cr8m-gm6c"],"url":"https://o3.security/vulnerability/CVE-2026-22217","summary":"OpenClaw 2026.2.22 < 2026.2.23 - Arbitrary Binary Execution via $SHELL Environment Variable Trusted Prefix Fallback","details":"### Summary\n`shell-env` fallback trusted prefix-based executable paths for `$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: `>= 2026.2.22, <= 2026.2.22-2`\n- Latest published vulnerable version: `2026.2.22-2`\n- Patched versions (released): `>= 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.","published":"2026-03-18T01:34:25.500Z","modified":"2026-08-12T03:51:43.073242572Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.2.23"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/ff10fe8b91670044a6bb0cd85deb736a0ec8fb55","label":"openclaw/openclaw@ff10fe8"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22217.json"},{"type":"ADVISORY","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":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-arbitrary-binary-execution-via-shell-environment-variable-trusted-prefix-fallback"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/ff10fe8b91670044a6bb0cd85deb736a0ec8fb55"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:43.073242572Z"}}