OpenClaw exec approvals: safeBins could bypass stdin-only constraints via shell expansion
Summary
OpenClaw's exec-approvals allowlist supports a small set of "safe bins" intended to be stdin-only (no positional file arguments) when running tools.exec.host=gateway|node with security=allowlist.
In affected configurations, the allowlist validation checked pre-expansion argv tokens, but execution used a real shell (sh -c) which expands globs and environment variables. This allowed safe bins like head, tail, or grep to read arbitrary local files via tokens such as * or $HOME/... without triggering approvals.
This issue is configuration-dependent and is not exercised by default settings (default tools.exec.host is sandbox).
Affected Packages / Versions
- Package:
openclaw(npm) - Affected:
<= 2026.2.13 - Patched:
>= 2026.2.14(planned; publish the advisory after the npm release is out)
Impact
An authorized but untrusted caller (or prompt-injection) could cause the gateway/node process to disclose files readable by that process when host execution is enabled in allowlist mode.
Fix
Safe-bins executions now force argv tokens to be treated as literal text at execution time (single-quoted), preventing globbing and $VARS expansion from turning "safe" tokens into file paths.
Fix Commit(s)
- 77b89719d5b7e271f48b6f49e334a8b991468c3b
Release Process Note
patched_versions is pre-set for the next planned release (>= 2026.2.14) so publishing is a single click once that npm version is available.
Thanks @christos-eth for reporting.
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