How severe is CVE-2026-34426?

CVE-2026-34426 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2026-34426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34426?

CVE-2026-34426 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34426?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34426 have an EU (EUVD) identifier?

Yes. CVE-2026-34426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18491.

When was CVE-2026-34426 published?

CVE-2026-34426 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-34426

CVE-2026-34426 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-184.

Key facts

Severity: High (CVSS 3.x base score 7.6)
CVSS v4: 6.9
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18491
Weakness: CWE-184
Affected product: Openclaw
Published: 2026-04-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-34426?: 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.
How severe is CVE-2026-34426?: CVE-2026-34426 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2026-34426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34426?: CVE-2026-34426 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34426 have an EU (EUVD) identifier?: Yes. CVE-2026-34426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18491.
When was CVE-2026-34426 published?: CVE-2026-34426 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

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