7.7
High
CVE-2026-106557 Backstage is an open framework for building developer portals
Description
Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package did not sufficiently validate TechDocs Markdown extension configuration. An authenticated user who can register or modify documentation sources may cause a TechDocs build to access resources outside the intended documentation boundary, potentially exposing backend-host data or internal network resources. This issue is fixed in versions 1.14.6 and 1.15.4 when pymdown-extensions 10.21.3 or later is also used, normally through mkdocs-techdocs-core 1.7.0 or later.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| backstage 1.51 | 1.51.0-next.0 → < 1.54.6 | 1.54.6 |
| backstage 1.50 | earliest → < 1.50.5 | 1.50.5 |
| plugin-techdocs-node 1.15 | 1.15.0 → < 1.15.4 | 1.15.4 |
| plugin-techdocs-node 1.14 | earliest → < 1.14.6 | 1.14.6 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
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