How severe is CVE-2026-35643?

CVE-2026-35643 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-35643 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-2026-35643?

CVE-2026-35643 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35643?

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-2026-35643 have an EU (EUVD) identifier?

Yes. CVE-2026-35643 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21438.

When was CVE-2026-35643 published?

CVE-2026-35643 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-35643

CVE-2026-35643 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-940.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.6
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21438
Weakness: CWE-940
Affected product: Openclaw
Published: 2026-04-10
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.22 contains an unvalidated WebView JavascriptInterface vulnerability allowing attackers to inject arbitrary instructions. Untrusted pages can invoke the canvas bridge to execute malicious code within the Android application context.

Frequently asked questions

What is CVE-2026-35643?: OpenClaw before 2026.3.22 contains an unvalidated WebView JavascriptInterface vulnerability allowing attackers to inject arbitrary instructions. Untrusted pages can invoke the canvas bridge to execute malicious code within the Android application context.
How severe is CVE-2026-35643?: CVE-2026-35643 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-35643 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-2026-35643?: CVE-2026-35643 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35643?: 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-2026-35643 have an EU (EUVD) identifier?: Yes. CVE-2026-35643 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21438.
When was CVE-2026-35643 published?: CVE-2026-35643 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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