hugo: Hugo is a static site generator
CVE-2026-58404 is fixed in hugo on 1 platform by DEBIAN-CVE-2026-58404 (version 0.165.0-1), released July 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Hugo is a static site generator. From v0.162.0 through v0.163.0, the default security.http.urls policy denies requests to loopback, internal, and cloud-metadata IPv4 literals, but the deny rule only matched dotted-decimal notation, so alternate IPv4 encodings of the same addresses, including integer, hex, or octal, passed the policy. When a template passes an untrusted or data-derived URL to resources.GetRemote and the host platform uses the cgo system resolver, these encodings resolve to the blocked address, allowing build-time server-side requests to loopback and internal services, including the cloud-metadata endpoint in hosted or CI builds; the same check is reused on redirects, so the gap also applies to each redirect hop. This issue is fixed in v0.163.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| hugo · Debian 14 | 0.165.0-1 | DEBIAN-CVE-2026-58404 | Jul 6, 2026 |
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