How severe is CVE-2026-27566?

CVE-2026-27566 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-27566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27566?

CVE-2026-27566 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27566?

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-2026-27566 have an EU (EUVD) identifier?

Yes. CVE-2026-27566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13007.

When was CVE-2026-27566 published?

CVE-2026-27566 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-27566

CVE-2026-27566 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 7.1. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v4: 7.1
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13007
Weakness: CWE-78
Affected product: Openclaw
Published: 2026-03-19
Last modified: 2026-06-17

Description

OpenClaw versions prior to 2026.2.22 contain an allowlist bypass vulnerability in system.run exec analysis that fails to unwrap env and shell-dispatch wrapper chains. Attackers can route execution through wrapper binaries like env bash to smuggle payloads that satisfy allowlist entries while executing non-allowlisted commands.

Frequently asked questions

What is CVE-2026-27566?: OpenClaw versions prior to 2026.2.22 contain an allowlist bypass vulnerability in system.run exec analysis that fails to unwrap env and shell-dispatch wrapper chains. Attackers can route execution through wrapper binaries like env bash to smuggle payloads that satisfy allowlist entries while executing non-allowlisted commands.
How severe is CVE-2026-27566?: CVE-2026-27566 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-27566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27566?: CVE-2026-27566 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27566?: 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-2026-27566 have an EU (EUVD) identifier?: Yes. CVE-2026-27566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13007.
When was CVE-2026-27566 published?: CVE-2026-27566 was published on 2026-03-19 and last updated on 2026-06-17.

References

Affected products (1)

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

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