GHSA-x597-9fr4-5857
GHSA-x597-9fr4-5857 is a security vulnerability in github.com/gohugoio/hugo. O3 Security confirms whether GHSA-x597-9fr4-5857 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Hugo's Node tool execution allows file system access outside the project directory
Real-World Exposure
github.com/gohugoio/hugoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Impact
When building a Hugo site that uses Node-based asset pipelines (PostCSS, Babel, TailwindCSS), Hugo invoked the configured Node tools without restrictions on file system access. As a result, executing hugo against an untrusted site could allow code running through these tools to read or write files outside the project's working directory.
Users who do not use PostCSS, Babel, or TailwindCSS, or who only build trusted sites, are not affected.
Patches
From v0.161.0, Hugo runs Node tools under Node's permission model with strict defaults: No write access and only read access to the site source directories and files.
Workarounds
Block these tools in security.exec.allow.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/gohugoio/hugo | ≥ 0.43.0&&< 0.161.0 | 0.161.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/gohugoio/hugo. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update github.com/gohugoio/hugo to 0.161.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x597-9fr4-5857 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-x597-9fr4-5857 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-x597-9fr4-5857. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-x597-9fr4-5857 in your dependencies?
O3 detects GHSA-x597-9fr4-5857 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.