CVE-2026-109595CWE-22path-traversal

CVE-2026-109595

Medium · published October 13, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
3.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
6.7 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00144 · 3.3th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-10-13T03:17Z
References (2)
https://github.com/gohugoio/hugo/security/advisories/GHSA-r4xx-89rf-5424 · [email protected]https://www.vulncheck.com/advisories/hugo-0.84.0-before-0.167.0-path-traversal-via-js-build-esbuild-resolver · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 22:21Z
    Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
    cvelistv5
  • 12 OCT 22:21Z
    Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
    cvelistv5