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.
- 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
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
Which versions are affected by CVE-2026-34426?
It affects 1 product.
Products include 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 Security feature bypass in OpenClaw
- CVE-2026-30741 Code injection in n/a
- CVE-2026-33579 OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval
- CVE-2026-32922 OpenClaw < 2026.3.11 - Privilege Escalation via Unvalidated Scope in device.token.rotate
- CVE-2026-32978 OpenClaw < 2026.3.11 - Approval Bypass via Unrecognized Script Runners
Sources
Also known as MINI-rjhg-j8xx-9ccv.