CVE-2026-106493
Backstage: Cloud storage catalog locations may cross configured storage boundaries
CVSS Score
3.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | backstage |
| Product | backstage |
| Published | Oct 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
backstage / backstage
< 1.54.6
@backstage / plugin-catalog-backend-module-azure
< 0.17.8
@backstage / plugin-catalog-backend-module-aws
< 0.4.27
@backstage / plugin-catalog-backend-module-azure
< 0.3.21