CVE-2026-106496
Published:October 06, 2026
Updated:October 13, 2026
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.
Affected Packages
https://github.com/backstage/backstage.git (GITHUB):
Affected version(s) >=v1.6.0-next.1 <v1.54.6Fix Suggestion:
Update to version v1.54.6@backstage/plugin-catalog-backend (NPM):
Affected version(s) >=3.0.0 <3.9.1Fix Suggestion:
Update to version 3.9.1@backstage/plugin-catalog-backend (NPM):
Affected version(s) >=0.0.0-nightly-2020972106 <3.9.1Fix Suggestion:
Update to version 3.9.1Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.21