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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-89259

Hugo before v0.165.0 Insufficient Permission Restriction via TailwindCSS

Description

Hugo is a static site generator. From v0.161.0, Hugo executes Node tools under Node's permission model, but TailwindCSS — included in the default security.exec.allow list — requires a highly permissive configuration (--allow-addons, --allow-child-process, --allow-worker). As a result, the restrictions intended by the fix for GHSA-x597-9fr4-5857 could still be bypassed, allowing a Node tool invoked during a build to read and write files outside the project's working directory. Affected versions are those after v0.43; the issue was fixed in v0.165.0 by removing tailwindcss from the default security.exec.allow list. Users who do not use TailwindCSS, or who only build trusted sites, are not affected. As a workaround, users can define a restrictive security.exec.allow list in hugo.toml.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

gohugoio hugo

Default version status: unaffected

  • 0 to < 0.165.0affected
  • 0.165.0unaffected
pkg:golang/github.com/gohugoio/hugo

References