GHSA-3xfw-4pmr-4xc5
MEDIUMOpenClaw safeBins grep -e File Read Bypass (stdin-only policy bypass)
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
openclawnpmDescription
Summary
OpenClaw tools.exec.safeBins had a stdin-only policy bypass for grep.
If pattern input was supplied through -e / --regexp, the validator consumed the pattern as a flag value and still allowed one positional operand. That positional could be a bare filename like .env.
Affected Packages / Versions
- Package:
openclaw(npm) - Latest published vulnerable version:
2026.2.19-2 - Structured vulnerable range:
<= 2026.2.19-2 - Planned fixed range for next release:
>= 2026.2.21
Exploit Preconditions
tools.exec.safeBinsmust includegrep(this is opt-in;grepis not in the default safe-bin list).- An actor must be able to invoke exec tooling under that profile.
Technical Details
src/infra/exec-safe-bin-policy.ts configured grep with maxPositional: 1 and allowed -e / --regexp value flags.
Because -e consumes the pattern in flag-value position, the remaining positional budget could be used for a file operand.
Example accepted input in vulnerable builds:
grep -e SECRET .env
That violated the intended stdin-only guarantee for safe bins.
Impact
With grep opt-in enabled, callers could read bare-relative files from the working directory (for example .env, credentials.txt) in flows expected to be stdin-only.
Severity Rationale
CVSS v3.1 is set to:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N (5.3, Medium)
AC:H is used because exploitation depends on a non-default configuration (grep must be explicitly added to safe bins) in addition to normal low-privilege tool-invocation capability.
Fix Commit(s)
c6ee14d60e4cbd6a82f9b2d74ebeb1e8ee814964
Release Process Note
patched_versions is pre-set to >= 2026.2.21 so this advisory is ready to publish after the 2026.2.21 npm release is live.
OpenClaw thanks @athuljayaram for reporting.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | openclaw | all versions | 2026.2.21 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update openclaw to 2026.2.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3xfw-4pmr-4xc5 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether GHSA-3xfw-4pmr-4xc5 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-3xfw-4pmr-4xc5. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-3xfw-4pmr-4xc5 in your dependencies?
O3 detects GHSA-3xfw-4pmr-4xc5 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.