SSRF in Openclaw
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (36.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-pg2v-8xwh-qhcc (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/bfa7d21e997baa8e3437657d59b1e296815cc1b1 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-server-side-request-forgery-in-tlon-exten… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28476?
- CVE-2026-28476 is a high-severity vulnerability in Openclaw, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2026-03-05.
- How severe is CVE-2026-28476?
- High severity. CVSS v3 base score is 8.3 out of 10.