Bug 2497451 (CVE-2026-50134)

Summary: CVE-2026-50134 github.com/gohugoio/hugo: Hugo: Security policy bypass via HTTP redirect manipulation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Hugo, a static site generator. This vulnerability allows an attacker, by controlling a server or its DNS, to redirect HTTP requests to a forbidden host. This bypasses the intended security policy, potentially leading to unauthorized access to resources or information disclosure that should have been restricted.
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Description OSIDB Bzimport 2026-07-06 20:01:47 UTC 
Hugo is a static site generator. From 0.91.0 until 0.162.0, resources.GetRemote enforces security.http.urls on the URL it is called with, but it did not re-validate intermediate URLs on HTTP 3xx redirects. An allowed server (or an attacker controlling its DNS or response) could therefore redirect the request to a host that the policy was meant to forbid and Hugo would fetch from the redirected target. The same bypass also lifted any host-shape restriction the operator had put in place. This vulnerability is fixed in 0.162.0.