How severe is CVE-2026-53853?

CVE-2026-53853 has a CVSS 3.x base score of 8.3, 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 low.

Is CVE-2026-53853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-53853?

CVE-2026-53853 primarily affects Openclaw. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-53853?

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-2026-53853 have an EU (EUVD) identifier?

Yes. CVE-2026-53853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37155.

When was CVE-2026-53853 published?

CVE-2026-53853 was published on 2026-06-16 and last updated on 2026-06-18.

CVE-2026-53853

CVE-2026-53853 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 8.3. 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-693.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v4: 7.6
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-37155
Weakness: CWE-693
Affected product: Openclaw
Published: 2026-06-16
Last modified: 2026-06-18

Description

OpenClaw before 2026.5.12 contains an argument pattern validation bypass in the exec allowlist that allows attackers to execute disallowed arguments for allowlisted executables on Linux and macOS systems. Attackers can bypass configured argPattern restrictions by directly invoking allowlisted executables with unrestricted arguments, potentially enabling unauthorized file access, network access, or command execution.

Frequently asked questions

What is CVE-2026-53853?: OpenClaw before 2026.5.12 contains an argument pattern validation bypass in the exec allowlist that allows attackers to execute disallowed arguments for allowlisted executables on Linux and macOS systems. Attackers can bypass configured argPattern restrictions by directly invoking allowlisted executables with unrestricted arguments, potentially enabling unauthorized file access, network access, or command execution.
How severe is CVE-2026-53853?: CVE-2026-53853 has a CVSS 3.x base score of 8.3, 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 low.
Is CVE-2026-53853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-53853?: CVE-2026-53853 primarily affects Openclaw. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-53853?: 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-2026-53853 have an EU (EUVD) identifier?: Yes. CVE-2026-53853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37155.
When was CVE-2026-53853 published?: CVE-2026-53853 was published on 2026-06-16 and last updated on 2026-06-18.

References

Affected products (9)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta1:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta2:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta3:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta4:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta5:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta6:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta7:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta8:*:*:*:node.js:*:*

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