What’s Vulnerable › Vulnerabilities

CVE-2026-50134: Hugo: security.http.urls allow-list bypass via HTTP redirects

• Severity: medium (CVSS 5.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-06 · updated 2026-10-25
• Weakness: CWE-918

Description

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.

Affected products

• gohugoio hugo: from 0.91.0 before 0.162.0 — fixed in 0.162.0

How to fix

Upgrade to a fixed version: gohugoio hugo 0.162.0. Check the vendor advisory for mitigations.

References

• https://github.com/gohugoio/hugo/commit/86fbb0f7a8bbb93e2e916390de9e5a4f24bf9f50
• https://github.com/gohugoio/hugo/releases/tag/v0.162.0
• https://github.com/gohugoio/hugo/security/advisories/GHSA-vxgm-5rmg-5w8g

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