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Backstage: Inconsistent enforcement of allowed location types during catalog processing

Type: advisorySource: Official CVE List1 source record

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.

Announced Source revision 1
Original source ↗

CVE-2026-106496

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-2026-106496

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-catalog-backend

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": "plugin-catalog-backend",
    "versions": [
      {
        "status": "affected",
        "version": "< 3.9.1"
      }
    ]
  }
]
Related CVEs
CVE-2026-106496

Source reference: /cveMetadata/cveId

Publisher severity

low

Source reference: /containers/cna/metrics

Event
#12013 · Revision 1
Added to Heist Feed
Publisher date
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