# CVE-2026-27670: OpenClaw < 2026.3.2 - Arbitrary File Write via ZIP Extraction Parent Symlink Race Condition

> Local attackers can write arbitrary files outside the intended directory via a race condition in ZIP extraction, requiring a patch to OpenClaw.

- **Severity:** Medium 5.8 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Mar 2026
- **Updated:** 23 Jun 2026
- **Also known as:** GHSA-2g8c-6qfq-528m, MINI-4w2w-rhf4-jvp9

## What is CVE-2026-27670?

CVE-2026-27670 is a medium-severity vulnerability in Openclaw Openclaw, published on 19 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

OpenClaw versions prior to 2026.3.2 contain a race condition vulnerability in ZIP extraction that allows local attackers to write files outside the intended destination directory. Attackers can exploit a time-of-check-time-of-use race between path validation and file write operations by rebinding parent directory symlinks to redirect writes outside the extraction root.

Weakness: CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition)

## Which versions are affected by CVE-2026-27670?

It affects 1 product.


Products: Openclaw Openclaw.

## How do I fix CVE-2026-27670?

Apply the vendor's patch.

## Is CVE-2026-27670 being exploited?

There is no known exploitation of CVE-2026-27670 in the wild and no public exploit code.

## Other vulnerabilities in Openclaw Openclaw

- [CVE-2026-28363](https://insights.sbomify.com/CVE-2026-28363/): Security feature bypass in OpenClaw (critical 9.9)
- [CVE-2026-30741](https://insights.sbomify.com/CVE-2026-30741/): Code injection in n/a (critical 9.8)
- [CVE-2026-33579](https://insights.sbomify.com/CVE-2026-33579/): OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval (critical 9.4)
- [CVE-2026-32922](https://insights.sbomify.com/CVE-2026-32922/): OpenClaw < 2026.3.11 - Privilege Escalation via Unvalidated Scope in device.token.rotate (critical 9.4)
- [CVE-2026-32978](https://insights.sbomify.com/CVE-2026-32978/): OpenClaw < 2026.3.11 - Approval Bypass via Unrecognized Script Runners (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27670 and fix it if it is affected.

What it is: CVE-2026-27670 is a medium-severity vulnerability in Openclaw Openclaw, published on 19 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-27670 in the wild and no public exploit code.

Affected product: Openclaw Openclaw. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-27670/ (Markdown: https://insights.sbomify.com/CVE-2026-27670/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27670
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27670
- OSV: https://osv.dev/vulnerability/CVE-2026-27670

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27670/
Summaries are generated and may contain mistakes; the official description above is the record.