GHSA-48wf-g7cp-gr3m OpenClaw has allowlist exec-guard bypass via env -S

• npm openclaw: < 2026.2.23 → fixed in 2026.2.23

Summary In `allowlist` mode, `system.run` guardrails could be bypassed through `env -S`, causing policy-analysis/runtime-execution mismatch for shell wrapper payloads. Severity Rationale (Medium) This issue is rated medium because it is a guardrail/policy bypass in OpenClaw's trusted-operator model, not an authentication boundary break. • Authenticated Gateway callers are trusted operators by design. • `exec` approvals/allowlists are operator safety controls. • The bug still weakens expected safety behavior and can enable unintended command execution when untrusted content influences tool input. Affected Packages / Versions • Package: `openclaw` (npm) • Vulnerable versions: `= 2026.2.23` Latest published npm version checked during triage: `2026.2.22-2`. Technical Impact When `/usr/bin/env` is allowlisted, `env -S 'sh -c ...'` could be treated as allowed non-wrapper argv while runtime still executes shell-wrapper semantics. Fix Commit(s) • `a1c4bf07c6baad3ef87a0e710fe9aef127b1f606` (core allowlist/runtime parity hardening) • `3f923e831364d83d0f23499ee49961de334cf58b` (explicit `env -S` regressions) Release Process Note `patched_versions` is pre-set to `>= 2026.2.23`, so this advisory is now public. OpenClaw thanks @tdjackey for reporting.