CVE-2026-106493
Low
Description
Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.
SeverityLow
CVSS3.0
Exploit probability—
Product
Linuxfoundation Backstage
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- linuxfoundation backstage1.54.6 or later
- linuxfoundation backstage\/backend-defaults0.17.8 or later
- linuxfoundation backstage\/plugin-catalog-backend-module-aws0.4.27 or later
- linuxfoundation backstage\/plugin-catalog-backend-module-azure0.3.21 or later
- @backstage/plugin-catalog-backend-module-azure0.3.21 or later
- @backstage/plugin-catalog-backend-module-aws0.4.27 or later
- @backstage/backend-defaults0.17.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation backstage | v < 1.54.6 | 1.54.6 |
| linuxfoundation backstage\/backend-defaults | v < 0.17.8 | 0.17.8 |
| linuxfoundation backstage\/plugin-catalog-backend-module-aws | v < 0.4.27 | 0.4.27 |
| linuxfoundation backstage\/plugin-catalog-backend-module-azure | v < 0.3.21 | 0.3.21 |
| @backstage/plugin-catalog-backend-module-azurenpm | v < 0.3.21 | 0.3.21 |
| @backstage/plugin-catalog-backend-module-awsnpm | v < 0.4.27 | 0.4.27 |
| @backstage/backend-defaultsnpm | v < 0.17.8 | 0.17.8 |
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