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OpenClaw's TOCTOU symlink race in writeFileWithinRoot could create or truncate files outside root boundariesGHSA-x82f-27x3-q89c

GHSA-x82f-27x3-q89c is a security vulnerability in openclaw. A fix is available for openclaw — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Mar 4, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

132other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
openclawnpm
3.4Mdownloads / week

Description

Summary

A symlink-retarget TOCTOU race in writeFileWithinRoot could point an attacker-controlled path alias outside the configured root between resolution and write operations.

Impact

Affected versions could cause out-of-root write side effects (including file creation or truncation) before final boundary validation.

Fix

Root-scoped write flow now opens existing files without pre-truncation, creates missing files with exclusive create semantics, truncates only after post-open identity/boundary checks, and removes out-of-root artifacts when a race is detected.

Affected and Patched Versions

  • Affected: <= 2026.2.26
  • Patched: 2026.3.1

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmopenclawall versions2026.3.1npm install openclaw@2026.3.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update openclaw to 2026.3.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x82f-27x3-q89c is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Summary A symlink-retarget TOCTOU race in `writeFileWithinRoot` could point an attacker-controlled path alias outside the configured root between resolution and write operations. ### Impact Affected versions could cause out-of-root write side effects (including file creation or truncation) before final boundary validation. ### Fix Root-scoped write flow now opens existing files without pre-truncation, creates missing files with exclusive create semantics, truncates only after post-open identity/boundary checks, and removes out-of-root artifacts when a race is detected. ### Affected and
O3 Security · Impact-Aware SCA

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OpenClaw's TOCTOU symlink race in writeFileWithinRoot…