SSRF in Ogx-Ai Ogx
CVE-2026-85666
OGX (formerly Llama Stack, affected at commit fbe8e0f) contains an unauthenticated server-side request forgery vulnerability in the OpenAI-compatible POST /v1/responses endpoint. MCP tool definitions accept a server_url parameter (along with headers and authorization values) that is fetched server-side without destination validation; the existing validate_url_not_private() guard used for other URL inputs is not applied to server_url. On the default starter configuration, which runs without authentication, a remote unauthenticated attacker can cause the server to open connections to arbitrary internal addresses (including cloud metadata endpoints such as http://169.254.169.254/) and forward attacker-supplied headers and bearer tokens to those destinations.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (53.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
Weakness classification (CWE)
References
- github.com/ogx-ai/ogx (product)
- github.com/ogx-ai/ogx/blob/v1.3.1/src/ogx/providers/utils/tools/mcp.py (technical-description)
- github.com/ogx-ai/ogx/issues/6287 (issue-tracking)
- www.vulncheck.com/advisories/ogx-1.3.1-server-side-request-forgery-via-mcp-tool… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85666?
- CVE-2026-85666 is a high-severity vulnerability in Ogx-Ai Ogx, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-09-04.
- How severe is CVE-2026-85666?
- High severity. CVSS v3 base score is 7.5 out of 10.