Backstage: Improper input validation in cloud storage URL readers
Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.
CVE-2026-106494
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-2026-106494
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
backend-defaults
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": "< 1.54.6"
}
]
},
{
"vendor": "@backstage",
"product": "backend-defaults",
"versions": [
{
"status": "affected",
"version": "< 0.17.8"
}
]
}
]- Related CVEs
- CVE-2026-106494
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #11935 · Revision 1
- Added to Heist Feed
- Publisher date