Hugo before 0.166.0 Cross-Site Scripting via text/org
Hugo is a static site generator. In versions from v0.56.0 through v0.165.x, content files mapped to the text/org media type are rendered without escaping raw HTML: Org export blocks and @@html:...@@ snippets pass HTML through unescaped, resulting in cross-site scripting (XSS) in the generated site. An attacker who can supply or influence a content file under /content or the output of a content adapter can inject scripts that execute in the browsers of visitors to the affected pages. Only pages whose source file or content-adapter output declares the text/org media type are affected, and sites that fully trust all content sources are not impacted. Version v0.166.0 fixes the issue by introducing a security.allowContent allowlist that denies text/org by default; sites that intentionally author Org Mode content can opt back in with [security] allowContent = ['.*'].
CVE-2026-100694
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100694
hugo
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "gohugoio",
"product": "hugo",
"versions": [
{
"status": "affected",
"version": "0.56.0",
"lessThan": "0.166.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.166.0",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/gohugoio/hugo",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100694
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #4445 · Revision 1
- Added to Heist Feed
- Publisher date