CVE-2026-106496
Low
Description
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.
SeverityLow
CVSS3.1
Exploit probability—
Product
Linuxfoundation Backstage Plugin-catalog-backend
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-22Path traversalCWE-863Incorrect authorization
How to fix
Update
- linuxfoundation backstage_plugin-catalog-backend3.9.1 or later
- linuxfoundation backstage1.54.6 or later
- @backstage/plugin-catalog-backend3.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation backstage_plugin-catalog-backend | v < 3.9.1 | 3.9.1 |
| linuxfoundation backstage | v < 1.54.6 | 1.54.6 |
| @backstage/plugin-catalog-backendnpm | v < 3.9.1 | 3.9.1 |
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