Hub/AI Security/Advisories/GHSA-66qx-2266-pmj6
fetch server: SSRF guard treats the well-known NAT64 prefix 64:ff9b::/96 as public, so a metadata address is reachable on NAT64/DNS64 egress
MCP reference servers security advisory.
| GHSA | GHSA-66qx-2266-pmj6 |
|---|---|
| Published | Oct 25, 2026 |
| Severity | Low 3.1 |
| CVE | None assigned |
| Status | patched |
| Affected | >= 2026.10.10, <= 2026.10.19 |
| Fixed in | 2026.10.24 |
| Component | MCP reference servers |
Sources
Checked 2026-11-04. We copy severity and fix versions from the source and never estimate them.
Affected tools
Weekly, free
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