Backstage: Improper validation of MkDocs plugin configuration in TechDocs
Backstage is an open framework for building developer portals. From 0.11.12 until 1.14.7 and 1.15.5, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.
CVE-2026-106455
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-2026-106455
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": ">= 0.71.1, < 1.50.6"
},
{
"status": "affected",
"version": ">= 1.51.0-next.0, < 1.54.8"
}
]
},
{
"vendor": "@backstage",
"product": "plugin-techdocs-node",
"versions": [
{
"status": "affected",
"version": ">= 0.11.12, < 1.14.7"
},
{
"status": "affected",
"version": ">= 1.15.0, < 1.15.5"
}
]
}
]- Related CVEs
- CVE-2026-106455
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #16149 · Revision 1
- Added to Heist Feed
- Publisher date