Hugo does not escape some attributes in internal templates
Date: 2024-12
Affected: go/github.com/gohugoio/hugo
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2024-55601
CWE: CWE-79

## Impact Some HTML attributes in Markdown in the internal templates listed below not escaped. Impacted are Hugo users who do not trust their Markdown content files and are using one or more of these templates. * `_default/_markup/render-link.html` from `v0.123.0` * `_default/_markup/render-image.html` from `v0.123.0` * `_default/_markup/render-table.html` from `v0.134.0` * `shortcodes/youtube.html` from `v0.125.0` ## Patches Patched in v0.139.4. ## Workarounds Replace with user defined templates or disable the internal templates: https://gohugo.io/getting-started/configuration-markup/#renderhooksimageenabledefault ## References * https://github.com/gohugoio/hugo/releases/tag/v0.139.4 * https://gohugo.io/about/security/


Mitigations:

Architectural layers (MAESTRO):