How severe is CVE-2026-41400?

CVE-2026-41400 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-41400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41400?

CVE-2026-41400 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41400?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41400 have an EU (EUVD) identifier?

Yes. CVE-2026-41400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26108.

When was CVE-2026-41400 published?

CVE-2026-41400 was published on 2026-04-28 and last updated on 2026-06-17.

CVE-2026-41400

CVE-2026-41400 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 5.3. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.9
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26108
Weakness: CWE-770
Affected product: Openclaw
Published: 2026-04-28
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.31 contains an incomplete fix for CVE-2026-32062 where the voice-call component parses large WebSocket frames before start validation. Remote attackers can send oversized pre-start WebSocket frames to cause resource consumption and denial of service.

Frequently asked questions

What is CVE-2026-41400?: OpenClaw before 2026.3.31 contains an incomplete fix for CVE-2026-32062 where the voice-call component parses large WebSocket frames before start validation. Remote attackers can send oversized pre-start WebSocket frames to cause resource consumption and denial of service.
How severe is CVE-2026-41400?: CVE-2026-41400 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-41400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41400?: CVE-2026-41400 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41400?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41400 have an EU (EUVD) identifier?: Yes. CVE-2026-41400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26108.
When was CVE-2026-41400 published?: CVE-2026-41400 was published on 2026-04-28 and last updated on 2026-06-17.

References

Affected products (1)

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

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