How severe is CVE-2026-35666?

CVE-2026-35666 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-35666 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35666?

CVE-2026-35666 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35666?

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-2026-35666 have an EU (EUVD) identifier?

Yes. CVE-2026-35666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21478.

When was CVE-2026-35666 published?

CVE-2026-35666 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-35666

CVE-2026-35666 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 8.8. 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-706.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.7
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21478
Weakness: CWE-706
Affected product: Openclaw
Published: 2026-04-10
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.22 contains an allowlist bypass vulnerability in system.run approvals that fails to unwrap /usr/bin/time wrappers. Attackers can bypass executable binding restrictions by using an unregistered time wrapper to reuse approval state for inner commands.

Frequently asked questions

What is CVE-2026-35666?: OpenClaw before 2026.3.22 contains an allowlist bypass vulnerability in system.run approvals that fails to unwrap /usr/bin/time wrappers. Attackers can bypass executable binding restrictions by using an unregistered time wrapper to reuse approval state for inner commands.
How severe is CVE-2026-35666?: CVE-2026-35666 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-35666 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35666?: CVE-2026-35666 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35666?: 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-2026-35666 have an EU (EUVD) identifier?: Yes. CVE-2026-35666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21478.
When was CVE-2026-35666 published?: CVE-2026-35666 was published on 2026-04-10 and last updated on 2026-06-17.

References

Affected products (1)

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

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