GHSA-m8v2-6wwh-r4gc OpenClaw's sandbox bind validation could bypass allowed-root and blocked-path checks via symlink-parent missing-leaf paths

• npm openclaw: < 2026.2.24 → fixed in 2026.2.24

Summary In `openclaw` up to and including 2026.2.23 (latest npm release as of February 24, 2026), sandbox bind-source validation could be bypassed when a bind source used a symlinked parent plus a non-existent leaf path. Affected Packages / Versions • Package: `openclaw` (npm) • Affected: `= 2026.2.24` (planned next release) Root Cause `validateBindMounts` previously relied on full-path realpath only when the full source path already existed. For missing-leaf paths, parent symlink traversal was not fully canonicalized before allowed-root and blocked-path checks. Security Impact A source path that looked inside an allowed root could resolve outside that root (including blocked runtime paths) once the missing leaf was created, weakening sandbox bind-source boundary enforcement. Fix The validation path now canonicalizes through the nearest existing ancestor, then always re-checks the canonical path against both: • allowed source roots • blocked runtime paths Verification • `pnpm check` • `pnpm exec vitest run --config vitest.gateway.config.ts` • `pnpm test:fast` • Added regression tests for symlink-parent + missing-leaf bypass patterns. Fix Commit(s) • `b5787e4abba0dcc6baf09051099f6773c1679ec1` Release Process Note `patched_versions` is pre-set to the planned next release (`2026.2.24`) so after npm publish the advisory can be published without further field edits. OpenClaw thanks @tdjackey for reporting. Publication Update (2026-02-25) `[email protected]` is published on npm and contains the fix commit(s) listed above. This advisory now marks `>= 2026.2.24` as patched.