CVE-2026-106493
Published:October 06, 2026
Updated:October 11, 2026
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.
Affected Packages
https://github.com/backstage/backstage.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.54.6Fix Suggestion:
Update to version v1.54.6@backstage/plugin-catalog-backend-module-azure (NPM):
Affected version(s) >=0.0.0-nightly-20220308022132 <0.3.21Fix Suggestion:
Update to version 0.3.21@backstage/plugin-catalog-backend-module-aws (NPM):
Affected version(s) >=0.0.0-nightly-20220219022334 <0.4.27Fix Suggestion:
Update to version 0.4.27@backstage/plugin-catalog-backend-module-aws (NPM):
Affected version(s) >=0.1.4-next.2 <0.4.27Fix Suggestion:
Update to version 0.4.27@backstage/backend-defaults (NPM):
Affected version(s) >=0.0.0-nightly-20220811024336 <0.17.8Fix Suggestion:
Update to version 0.17.8@backstage/plugin-catalog-backend-module-azure (NPM):
Affected version(s) >=0.3.0 <0.3.21Fix Suggestion:
Update to version 0.3.21@backstage/backend-defaults (NPM):
Affected version(s) >=0.3.0-next.3 <0.17.8Fix Suggestion:
Update to version 0.17.8Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
EPSS
Base Score:
0.26