What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-02 · updated 2026-07-24
• Weakness: CWE-184

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.

Affected products

• OpenClaw: before 2026.4.2 — fixed in 2026.4.2

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.2. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/b57b680c0c34de907d57f60c38fb358e82aef8f7
• https://github.com/openclaw/openclaw/pull/59182
• https://github.com/openclaw/openclaw/security/advisories/GHSA-98ch-45wp-ch47
• https://www.vulncheck.com/advisories/openclaw-approval-bypass-via-environment-variable-normalization

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