GHSA-jxrq-8fm4-9p58 OpenClaw: Zip extraction symlink traversal could write outside destination

• npm openclaw: < 2026.2.22 → fixed in 2026.2.22

Summary A path confinement bypass in OpenClaw ZIP extraction allowed writes outside the intended destination when a pre-existing symlink was present under the extraction root. Affected Packages / Versions • Package: `openclaw` (npm) • Latest published npm version at triage time: `2026.2.21-2` • Affected versions: `<= 2026.2.21-2` • Planned patched version for next release: `2026.2.22` Technical Details The vulnerable path was in `src/infra/archive.ts` ZIP extraction logic. Output-path checks were lexical, but writes could still traverse an existing symlink in destination path segments. The fix blocks this by: • rejecting symlink traversal in destination path segments, • validating resolved destination paths remain inside the extraction root, • using no-follow file opens for ZIP output writes where supported, • adding a regression test for pre-seeded destination symlink traversal. Impact • Type: Arbitrary file write outside extraction root via symlink traversal during ZIP extraction. • Preconditions: attacker-controlled archive extraction plus pre-existing symlink in destination path. Fix Commit(s) • 4b226b74f5fd3b106a83a6347fd404172e2fd246 Release Process Note Patched version is pre-set to the planned next release (`2026.2.22`). Once npm release `2026.2.22` is published, the advisory can be published without further field edits. OpenClaw thanks @tdjackey for reporting.