CVE-2026-106489

MediumCVSS 6.5/10Last modified Oct 22, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-22CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Oct 6, 2026
Last modified
Oct 22, 2026
NVD status
Analyzed

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CVE-2026-106489: Medium severity, CVSS 6.5 | Vulnix