Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml
Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.
CVE-2026-106510
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-2026-106510
backstage
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
plugin-techdocs-node
Source reference: /containers/cna/affected/1/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": "backstage",
"product": "backstage",
"versions": [
{
"status": "affected",
"version": "< 1.50.5"
},
{
"status": "affected",
"version": ">= 1.51.0-next.0, < 1.54.6"
}
]
},
{
"vendor": "@backstage",
"product": "plugin-techdocs-node",
"versions": [
{
"status": "affected",
"version": "< 1.14.6"
},
{
"status": "affected",
"version": ">= 1.15.0, < 1.15.4"
}
]
}
]- Related CVEs
- CVE-2026-106510
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #12036 · Revision 1
- Added to Heist Feed
- Publisher date