CVE-2026-106489

Backstage is an open framework for building developer portals. Prior to 2.2.4, the @backstage/plugin-techdocs-backend package is affected by improper authorization enforcement for techdocs static content. An authenticated user with access to one TechDocs documentation site could craft a URL able to read documentation belonging to a different entity. This only affects deployments using the external TechDocs builder with an external storage provider (S3, GCS, etc.) and the permission framework enabled. Instances that do not use the permission framework are unaffected, since TechDocs content is visible to all authenticated users by design. This issue is fixed in version 2.2.4.
Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:backstage\/plugin-techdocs-backend:*:*:*:*:*:node.js:*:*

Configuration 2 (hide)

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

History

22 Oct 2026, 14:42

Type Values Removed Values Added
References () https://github.com/backstage/backstage/commit/bf6bbf7326ada7d96d7b2c4ebc4a71546106f311 - () https://github.com/backstage/backstage/commit/bf6bbf7326ada7d96d7b2c4ebc4a71546106f311 - Patch
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-rg9r-hr7g-5gc2 - () https://github.com/backstage/backstage/security/advisories/GHSA-rg9r-hr7g-5gc2 - Vendor Advisory
CPE cpe:2.3:a:linuxfoundation:backstage\/plugin-techdocs-backend:*:*:*:*:*:node.js:*:*
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
First Time Linuxfoundation
Linuxfoundation backstage
Linuxfoundation backstage\/plugin-techdocs-backend

06 Oct 2026, 21:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-06 21:17

Updated : 2026-10-22 14:42


NVD link : CVE-2026-106489

Mitre link : CVE-2026-106489

CVE.ORG link : CVE-2026-106489


JSON object : View

Products Affected

linuxfoundation

  • backstage
  • backstage\/plugin-techdocs-backend
CWE
CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-862

Missing Authorization