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CVE-2026-50134 gohugoio CVE debrief

CVE-2026-50134 is a vulnerability in the Hugo static site generator that allows for a security bypass via HTTP 3xx redirects. The vulnerability exists in versions from 0.91.0 until 0.162.0 of the Hugo software. The resources.GetRemote function enforces security.http.urls on the URL it is called with, but it did not re-validate intermediate URLs on HTTP 3xx redirects. This allows an allowed server or an attacker controlling its DNS or response to 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. The vulnerability is fixed in version 0.162.0. This vulnerability has significant implications for the security of Hugo sites, as it allows an attacker to bypass security restrictions and fetch content from unauthorized hosts.

Vendor
gohugoio
Product
hugo
CVSS
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-07-08
Advisory published
2026-07-06
Advisory updated
2026-07-08

Who should care

Users of Hugo static site generator versions from 0.91.0 until 0.162.0 should be aware of this vulnerability and take steps to mitigate it. This includes upgrading to version 0.162.0 or applying compensating controls to restrict access to the Hugo site. Operators of Hugo sites should review their current version and assess their exposure to this vulnerability. Security teams should prioritize this vulnerability and ensure that affected sites are remediated.

Technical summary

The resources.GetRemote function in Hugo versions 0.91.0 to 0.161.0 does not properly validate URLs during HTTP 3xx redirects. This allows an attacker to bypass security restrictions and fetch content from unauthorized hosts. The vulnerability is due to the lack of re-validation of intermediate URLs during redirects, which can be exploited by an allowed server or an attacker controlling its DNS or response. The vulnerability has been fixed in version 0.162.0, which properly validates URLs during redirects.

Defensive priority

High criticality due to potential for security bypass and unauthorized content fetching. Defenders should prioritize remediation of affected Hugo sites and implement compensating controls to restrict access to the site. Monitoring and detection capabilities should be reviewed to ensure that potential exploitation is detected. Asset inventory and vulnerability management processes should be updated to reflect this vulnerability and ensure that affected sites are remediated. Rollback and change management processes should be reviewed to ensure that remediation is properly verified and documented. Source tracking and incident response processes should be updated to reflect this vulnerability and ensure that potential exploitation is properly handled. The vulnerability requires immediate attention from defenders, and remediation should be prioritized accordingly. The high priority is due to the potential for an attacker to bypass security restrictions and fetch content from unauthorized hosts, which could lead to a significant security breach. Defenders should take a proactive approach to remediating this vulnerability and implementing compensating controls to restrict access to the Hugo site. The vulnerability has significant implications for the security of Hugo sites, and defenders should take immediate action to mitigate it. The priority is high because the vulnerability allows an attacker to bypass security restrictions and fetch content from unauthorized hosts, which could lead to a significant security breach. Defenders should prioritize remediation of affected Hugo sites and implement compensating controls to restrict access to the site. The vulnerability requires immediate attention from defenders, and remediation should be prioritized accordingly. The high priority is due to the potential for an attacker to bypass security restrictions and fetch content from unauthorized hosts, which could lead to a significant security breach. Defenders should take a proactive approach to remediating this vulnerability and implementing compensating controls to restrict access to the Hugo site. The vulnerability has significant implications for the security of Hugo sites,

Recommended defensive actions

  • Upgrade to Hugo version 0.162.0 or later
  • Restrict access to the Hugo site to only trusted hosts
  • Monitor for suspicious activity and exception tracking
  • Implement compensating controls to restrict access to the Hugo site
  • Review asset inventory to identify affected Hugo sites
  • Verify and document remediation through change management processes
  • Track exceptions and retest remediated assets for confirmation

Evidence notes

The CVE record was published on 2026-07-06T20:16:37.197Z and was last modified on 2026-07-07T18:16:38.913Z. The NVD entry is currently Undergoing Analysis. The vulnerability is fixed in version 0.162.0. Evidence is limited, and defenders should verify the affected scope and vendor guidance. The CVE record provides details on the vulnerability, but additional analysis is required to fully understand the impact.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-06T20:16:37.197Z and has not been modified since then. The NVD entry is currently Undergoing Analysis.