# CVE-2026-34426: OpenClaw - Approval Bypass via Environment Variable Normalization

> Attackers bypass approval checks via environment variable normalization flaws to execute arbitrary binaries in MinimOS.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 2 Apr 2026
- **Updated:** 3 Apr 2026
- **Also known as:** MINI-rjhg-j8xx-9ccv

## What is CVE-2026-34426?

CVE-2026-34426 is a medium-severity vulnerability in Openclaw Openclaw, published on 2 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

OpenClaw versions prior to commit b57b680 contain an approval bypass vulnerability due to inconsistent environment variable normalization between approval and execution paths, allowing attackers to inject attacker-controlled environment variables into execution without approval system validation. Attackers can exploit differing normalization logic to discard non-portable keys during approval processing while accepting them at execution time, bypassing operator review and potentially influencing runtime behavior including execution of attacker-controlled binaries.

Weakness: CWE-184 (Incomplete List of Disallowed Inputs)

## Which versions are affected by CVE-2026-34426?

It affects 1 product.


Products: Openclaw Openclaw.

## How do I fix CVE-2026-34426?

Apply the vendor's patch.

## Is CVE-2026-34426 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34426 exists.

## 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-2026-34426 and fix it if it is affected.

What it is: CVE-2026-34426 is a medium-severity vulnerability in Openclaw Openclaw, published on 2 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34426 exists.

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-2026-34426/ (Markdown: https://insights.sbomify.com/CVE-2026-34426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34426
- OSV: https://osv.dev/vulnerability/CVE-2026-34426

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-34426/
Summaries are generated and may contain mistakes; the official description above is the record.