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CVE-2026-28476

8.3 · HIGH

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…

Published Mar 5, 2026CWE-918EPSS 0.44%

Overview

CVE-2026-28476 is a high-severity vulnerability. It was published on March 5, 2026 and has a CVSS 3.1 base score of 8.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/openclaw/openclaw/commit/bfa7d21e997baa8e3437657d59b1e296815cc1b1GitHubgithub.com/openclaw/openclaw/security/advisories/GHSA-pg2v-8xwh-qhccRefwww.vulncheck.com/advisories/openclaw-server-side-request-forgery-in-tlon-extension-authentication

How CyberStrike helps

Frequently asked questions

What is CVE-2026-28476?

CVE-2026-28476 is a high-severity vulnerability. It was published on March 5, 2026 and has a CVSS 3.1 base score of 8.3 (HIGH).

How severe is CVE-2026-28476?

This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-28476?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-28476?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-28476 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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