All vulnerabilities
CVE-2026-109595GHSA-r4xx-89rf-5424

Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver

gohugoio hugo
Open in ThreatlineRecord JSON
CVSS
6.7Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.167.0Fixed versionCVE List
Published12 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Hugo from v0.84.0 before v0.167.0 contains a path traversal vulnerability that allows malicious themes or modules to read files outside the project root via ESBuild's fallback resolver in js.Build, js.Batch, and css.Build. Attackers can ship relative imports or symlinks pointing outside the project to bundle any file readable by the build user into published JavaScript or CSS output.

Text from CVE List

Affected versions 2

  • hugoaffected: 0.84.0 before 0.167.0CVE List
  • hugounaffected: 0.167.0CVE List

References 2