Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions
Backstage is an open framework for building developer portals. Prior to 0.3.10 in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud and 0.2.25 in @backstage/plugin-scaffolder-backend-module-bitbucket-server, the Bitbucket pull-request Scaffolder actions did not sufficiently validate filesystem paths. An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability. This issue is fixed in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25.
CVE-2026-106486
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-2026-106486
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-scaffolder-backend-module-bitbucket-cloud
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
plugin-scaffolder-backend-module-bitbucket-server
Source reference: /containers/cna/affected/2/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": "plugin-scaffolder-backend-module-bitbucket-cloud",
"versions": [
{
"status": "affected",
"version": "< 0.3.10"
}
]
},
{
"vendor": "@backstage",
"product": "plugin-scaffolder-backend-module-bitbucket-server",
"versions": [
{
"status": "affected",
"version": "< 0.2.25"
}
]
}
]- Related CVEs
- CVE-2026-106486
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #11971 · Revision 1
- Added to Heist Feed
- Publisher date