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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-75926 Detail

Description

Hugo 0.161.0 placed the Node asset pipelines behind the Node.js permission model so that code running through PostCSS, Babel, or TailwindCSS could not reach the file system outside the project directory. Hugo 0.162.0 added tailwindcss to the AllowChildProcess default in config/security/securityConfig.go, which makes nodePermissionArgs in common/hexec/exec.go append --allow-child-process whenever the tool being launched is named tailwindcss. TailwindCSS loads the site's tailwind.config.js through require at startup, so top-level code in that file executes inside the permitted Node process and can call child_process to spawn a shell. The spawned process is not a Node process and inherits none of the permission flags, so it runs with the full privileges of the account performing the build. Building a site whose theme, module, or starter template supplies the Tailwind configuration therefore yields arbitrary command execution rather than the confined file access the permission model was introduced to enforce. Hugo 0.165.0 removes tailwindcss from the default security.exec.allow list, so the tool is no longer launched under the default configuration.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 9.3 CRITICAL
Vector:  CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/gohugoio/hugo VulnCheck
https://github.com/gohugoio/hugo/blob/v0.164.0/common/hexec/exec.go#L292-L295 VulnCheck
https://github.com/gohugoio/hugo/blob/v0.164.0/config/security/securityConfig.go#L72-L79 VulnCheck
https://github.com/gohugoio/hugo/commit/8a55df7af2e6da31297245cc54fa2e3b521d93e8 VulnCheck
https://github.com/gohugoio/hugo/issues/15178 VulnCheck
https://www.vulncheck.com/advisories/hugo-to-x-node-permission-model-bypass-via-default-tailwindcss-child-process-grant VulnCheck

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1188 Insecure Default Initialization of Resource VulnCheck  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-75926
NVD Published Date:
08/18/2026
NVD Last Modified:
08/18/2026
Source:
VulnCheck