How severe is CVE-2026-28476?

CVE-2026-28476 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-28476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28476?

CVE-2026-28476 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28476?

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-2026-28476 have an EU (EUVD) identifier?

Yes. CVE-2026-28476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9922.

When was CVE-2026-28476 published?

CVE-2026-28476 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28476

CVE-2026-28476 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v4: 6.3
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9922
Weakness: CWE-918
Affected product: Openclaw
Published: 2026-03-05
Last modified: 2026-06-17

Description

OpenClaw versions prior to 2026.2.14 contain a server-side request forgery vulnerability in the optional Tlon Urbit extension that accepts user-provided base URLs for authentication without proper validation. Attackers who can influence the configured Urbit URL can induce the gateway to make HTTP requests to arbitrary hosts including internal addresses.

Frequently asked questions

What is CVE-2026-28476?: OpenClaw versions prior to 2026.2.14 contain a server-side request forgery vulnerability in the optional Tlon Urbit extension that accepts user-provided base URLs for authentication without proper validation. Attackers who can influence the configured Urbit URL can induce the gateway to make HTTP requests to arbitrary hosts including internal addresses.
How severe is CVE-2026-28476?: CVE-2026-28476 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-28476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28476?: CVE-2026-28476 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28476?: 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-2026-28476 have an EU (EUVD) identifier?: Yes. CVE-2026-28476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9922.
When was CVE-2026-28476 published?: CVE-2026-28476 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (1)

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

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