CVE-2026-106490Backstage: Improper input validation in TechDocs static content requests

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/backstage/backstage/security/advisories/GHSA-7mfx-xg57-53c9 MitigationVendor Advisory
• https://github.com/backstage/backstage/commit/40ecc4c2e88b0218125b0a3405d1f6315b321974 Patch
• https://github.com/backstage/backstage/releases/tag/v1.54.6 PatchRelease Notes