How severe is CVE-2026-53836?

CVE-2026-53836 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-2026-53836 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-53836?

CVE-2026-53836 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-53836?

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-2026-53836 have an EU (EUVD) identifier?

Yes. CVE-2026-53836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36624.

When was CVE-2026-53836 published?

CVE-2026-53836 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-53836

CVE-2026-53836 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-184.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36624
Weakness: CWE-184
Affected product: Openclaw
Published: 2026-06-12
Last modified: 2026-06-17

Description

OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.

Frequently asked questions

What is CVE-2026-53836?: OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.
How severe is CVE-2026-53836?: CVE-2026-53836 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-2026-53836 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-53836?: CVE-2026-53836 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-53836?: 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-2026-53836 have an EU (EUVD) identifier?: Yes. CVE-2026-53836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36624.
When was CVE-2026-53836 published?: CVE-2026-53836 was published on 2026-06-12 and last updated on 2026-06-17.

References

Affected products (1)

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

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