CVE-2026-106492

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*
cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*

Configuration 2 (hide)

OR cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*

History

22 Oct 2026, 13:40

Type Values Removed Values Added
First Time Linuxfoundation backstage
Linuxfoundation
Linuxfoundation backstage\/backend-defaults
References () https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124 - () https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124 - Patch
References () https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33 - () https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33 - Patch
References () https://github.com/backstage/backstage/releases/tag/v1.49.6 - () https://github.com/backstage/backstage/releases/tag/v1.49.6 - Patch, Release Notes
References () https://github.com/backstage/backstage/releases/tag/v1.54.6 - () https://github.com/backstage/backstage/releases/tag/v1.54.6 - Patch, Release Notes
References () https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v - () https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v - Mitigation, Vendor Advisory
CPE cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*

06 Oct 2026, 21:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-06 21:17

Updated : 2026-10-22 13:40


NVD link : CVE-2026-106492

Mitre link : CVE-2026-106492

CVE.ORG link : CVE-2026-106492


JSON object : View

Products Affected

linuxfoundation

  • backstage\/backend-defaults
  • backstage
CWE
CWE-269

Improper Privilege Management

CWE-863

Incorrect Authorization