CVE-2026-109595
Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Active
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
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.
- Record
CVE-2026-109595- CVSS 4.0
- 6.7 Medium
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 - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2026-98158
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.
- Record
EUVD-2026-98158- CVSS 4.0
- 6.7 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6cfm-3xc5-q3r5
Hugo from v0.84.0 before v0.167.0 contains a path traversal vulnerability that allows malicious...
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.
- Record
GHSA-6cfm-3xc5-q3r5- CVSS 4.0
- 6.7 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-109595- CVSS 4.0
- 6.7 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
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.
- Record
CVE-2026-109595- CVSS 4.0
- 6.7 Medium
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 - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-109595
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.
- Record
DEBIAN-CVE-2026-109595- CVSS 4.0
- 6.7 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVRHSA-2026:80677
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- Record
RHSA-2026:80677- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-109595
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.
- Record
UBUNTU-CVE-2026-109595- CVSS 4.0
- 6.7 Medium
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 - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
hugoDebian:12 |
All versions, plus listed versions 0.111.3-10.112.7-10.113.0-10.113.0-20.113.0-3 Show 45 moreShow less0.114.1-10.114.1-20.115.4-10.116.1-10.117.0-10.118.2-10.119.0-10.119.0-20.120.3-10.120.4-10.121.1-10.121.2-10.122.0-10.123.3-10.123.7-10.123.8-10.123.8-20.124.1-10.125.4-10.125.5-10.125.6-10.125.7-10.126.1-10.126.2-10.126.3-10.127.0-10.128.2-10.128.2-20.129.0-10.129.0-20.130.0-10.130.0-20.131.0-10.131.0-20.150.0-10.150.1-10.151.0-10.151.1-10.151.2-10.152.1-10.152.2-10.153.0-10.153.1-10.153.1-20.153.1-3 |
None known |
hugoDebian:13 |
All versions, plus listed versions 0.131.0-10.131.0-20.150.0-10.150.1-10.151.0-1 Show 45 moreShow less0.151.1-10.151.2-10.152.1-10.152.2-10.153.0-10.153.1-10.153.1-20.153.1-30.153.2-10.154.1-10.154.2-10.154.2-20.154.3-10.154.5-10.155.1-10.155.2-10.155.3-10.157.0-10.157.0-20.157.0-30.158.0-10.158.0-20.158.0-30.159.0-10.159.1-10.159.2-10.160.0-10.160.0-20.160.1-10.161.0-10.161.1-10.162.1-10.162.1-20.162.1-30.162.1-40.162.1-50.162.1-60.162.1-70.165.0-10.165.0-20.165.0-30.166.0-10.166.0-20.167.0-10.167.0-2 |
None known |
hugoDebian:14 |
before 0.167.0-1, plus listed versions 0.131.0-10.131.0-20.150.0-10.150.1-10.151.0-1 Show 43 moreShow less0.151.1-10.151.2-10.152.1-10.152.2-10.153.0-10.153.1-10.153.1-20.153.1-30.153.2-10.154.1-10.154.2-10.154.2-20.154.3-10.154.5-10.155.1-10.155.2-10.155.3-10.157.0-10.157.0-20.157.0-30.158.0-10.158.0-20.158.0-30.159.0-10.159.1-10.159.2-10.160.0-10.160.0-20.160.1-10.161.0-10.161.1-10.162.1-10.162.1-20.162.1-30.162.1-40.162.1-50.162.1-60.162.1-70.165.0-10.165.0-20.165.0-30.166.0-10.166.0-2 |
0.167.0-1 |
hugoRed Hat:hummingbird:1 From an advisory covering 5 CVEs |
before 0:0.167.0-0.2.hum1 | 0:0.167.0-0.2.hum1 |
hugoUbuntu:16.04:LTS |
All versions, plus listed versions 0.15+git20160109.147.dd1d655-10.15+git20160109.147.dd1d655-20.15+git20160128.179.5def6d9-10.15+git20160206.203.ed23711-1 |
None known |
hugoUbuntu:18.04:LTS |
All versions, plus listed versions 0.25.1-20.26-10.35-10.37.1-10.38-10.39-10.40-10.40.1-1 |
None known |
hugoUbuntu:20.04:LTS |
All versions, plus listed versions 0.57.2-10.58.3-10.59.1-1.10.68.3-1 |
None known |
hugoUbuntu:22.04:LTS |
All versions, plus listed versions 0.80.0-60.89.4-20.90.0-10.90.1-10.91.0-1 Show 5 moreShow less0.91.2-10.92.0-10.92.1-1build10.92.2-10.92.2-1ubuntu0.1 |
None known |
hugoUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 0.113.0-30.119.0-20.120.3-10.120.4-10.121.2-1 Show 8 moreShow less0.122.0-10.123.7-1build10.123.7-1ubuntu0.10.123.7-1ubuntu0.20.123.7-1ubuntu0.2+esm10.123.7-1ubuntu0.30.123.7-1ubuntu0.3+esm10.123.7-1ubuntu0.3+esm2 |
None known |
hugoUbuntu:26.10 |
All versions, plus listed versions 0.154.5-10.162.1-50.162.1-7 |
None known |
hugoUbuntu:26.04:LTS |
All versions, plus listed versions 0.131.0-10.152.2-10.153.1-30.153.2-10.154.2-20.154.3-10.154.5-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-109595 is a medium vulnerability (CVSS 6.7) in Gohugoio Hugo, published October 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in hugo 0.167.0-1.
References
github.com/gohugoio/hugo/security/advisories/GHSA-r4xx-89rf-5424
vulncheck.com/advisories/hugo-0.84.0-before-0.167.0-path-traversal-via-js-build-esbuild-resolver
nvd.nist.gov/vuln/detail/CVE-2026-109595
security-tracker.debian.org/tracker/CVE-2026-109595
Show 33 moreShow less
access.redhat.com/errata/RHSA-2026:80677
images.redhat.com
security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80677.json
bugzilla.redhat.com/show_bug.cgi?id=2268046
cve.org/CVERecord?id=CVE-2024-24786
go.dev/cl/569356
groups.google.com/g/golang-announce/c/ArQ6CDgtEjY
pkg.go.dev/vuln/GO-2024-2611
ubuntu.com/security/CVE-2026-109595
Left out here: 47 versions. The JSON record has them.