How severe is CVE-2026-35627?

CVE-2026-35627 has a CVSS 3.x base score of 6.5, 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 low, and availability low.

Is CVE-2026-35627 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-2026-35627?

CVE-2026-35627 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35627?

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

Does CVE-2026-35627 have an EU (EUVD) identifier?

Yes. CVE-2026-35627 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21112.

When was CVE-2026-35627 published?

CVE-2026-35627 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-35627

CVE-2026-35627 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 6.5. 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-696.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21112
Weakness: CWE-696
Affected product: Openclaw
Published: 2026-04-09
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.22 performs cryptographic and dispatch operations on inbound Nostr direct messages before enforcing sender and pairing policy validation. Attackers can trigger unauthorized pre-authentication computation by sending crafted DM messages, enabling denial of service through resource exhaustion.

Frequently asked questions

What is CVE-2026-35627?: OpenClaw before 2026.3.22 performs cryptographic and dispatch operations on inbound Nostr direct messages before enforcing sender and pairing policy validation. Attackers can trigger unauthorized pre-authentication computation by sending crafted DM messages, enabling denial of service through resource exhaustion.
How severe is CVE-2026-35627?: CVE-2026-35627 has a CVSS 3.x base score of 6.5, 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 low, and availability low.
Is CVE-2026-35627 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-2026-35627?: CVE-2026-35627 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35627?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35627 have an EU (EUVD) identifier?: Yes. CVE-2026-35627 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21112.
When was CVE-2026-35627 published?: CVE-2026-35627 was published on 2026-04-09 and last updated on 2026-06-17.

References

Affected products (1)

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

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