CVE-2026-106490

Backstage is an open framework for building developer portals. Prior to 2.2.4, the @backstage/plugin-techdocs-backend package is affected by improper input validation in techdocs static content requests. When using the Azure Blob Storage provider, an authenticated Backstage user may be able to read restricted TechDocs content when entity-level permissions are enabled. Deployments that intentionally disable the default backend authentication policy may have broader exposure. 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, 14:40

Type Values Removed Values Added
First Time Linuxfoundation
Linuxfoundation backstage
Linuxfoundation backstage\/plugin-techdocs-backend
References () https://github.com/backstage/backstage/commit/40ecc4c2e88b0218125b0a3405d1f6315b321974 - () https://github.com/backstage/backstage/commit/40ecc4c2e88b0218125b0a3405d1f6315b321974 - 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-7mfx-xg57-53c9 - () https://github.com/backstage/backstage/security/advisories/GHSA-7mfx-xg57-53c9 - Mitigation, Vendor Advisory
CPE cpe:2.3:a:linuxfoundation:backstage\/plugin-techdocs-backend:*:*:*:*:*: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 14:40


NVD link : CVE-2026-106490

Mitre link : CVE-2026-106490

CVE.ORG link : CVE-2026-106490


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-23

Relative Path Traversal