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.
References
| Link | Resource |
|---|---|
| https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124 | Patch |
| https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33 | Patch |
| https://github.com/backstage/backstage/releases/tag/v1.49.6 | Patch Release Notes |
| https://github.com/backstage/backstage/releases/tag/v1.54.6 | Patch Release Notes |
| https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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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 - Patch | |
| References | () https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33 - Patch | |
| References | () https://github.com/backstage/backstage/releases/tag/v1.49.6 - Patch, Release Notes | |
| References | () 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 - 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
