CVE-2026-50135 gohugoio CVE debrief

Who should care

Users of Hugo static site generator, particularly those using versions between 0.123.0 and 0.161.1, should be aware of this vulnerability. Developers and administrators who manage websites generated with Hugo should assess their exposure and take necessary actions to protect against potential exploitation.

Technical summary

The vulnerability in Hugo arises from a regression introduced in version 0.123.0 and persisting until version 0.161.1. This regression causes the RootMappingFs.statRoot function to incorrectly use Stat instead of Lstat when handling file system operations. As a result, when a resources.Get operation is performed on a symlink that points outside its mount, the function returns the contents of the target file instead of the symlink itself. An attacker could exploit this by creating a symlink in a local mount (for example, in a vendored themes/ directory) that points to an arbitrary file accessible to the Hugo user. Upon accessing the symlink through a resources.Get operation, the contents of the target file would be returned, potentially allowing for unauthorized file reading.

Defensive priority

Medium priority should be given to addressing this vulnerability, especially for environments where Hugo is used in a context that could expose sensitive files or where an attacker might be able to plant symlinks.

Recommended defensive actions

• Upgrade to Hugo version 0.162.0 or later to fix the vulnerability.
• Review and audit existing Hugo projects, especially those using affected versions, for potential symlinks that could be exploited.
• Implement monitoring to detect any suspicious use of resources.Get operations in Hugo projects.
• Consider restricting access to sensitive files and directories to limit potential damage from exploitation.
• Regularly update and patch Hugo installations to protect against known vulnerabilities.

Evidence notes

The CVE record was published on 2026-07-06T21:16:56.347Z and was last modified on 2026-07-07T18:16:39.033Z. The NVD entry is currently Undergoing Analysis. The vulnerability was fixed in Hugo version 0.162.0. Limited information is available about the specific exploits or attacks related to this vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.