CVE-2026-106505
High
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 is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.
SeverityHigh
CVSS7.7
Exploit probability—
Product
Linuxfoundation Backstage Plugin-techdocs-node
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-426CWE-426CWE-436CWE-436
How to fix
Update
- linuxfoundation backstage_plugin-techdocs-node1.14.6, 1.15.4 or later
- linuxfoundation backstage1.50.5, 1.54.6 or later
- @backstage/plugin-techdocs-node1.15.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation backstage_plugin-techdocs-node | v < 1.14.6, 1.15.0 ≤ v < 1.15.4 | 1.14.6, 1.15.4 |
| linuxfoundation backstage | v < 1.50.5, 1.51.1 ≤ v < 1.54.6, 1.51.0 | 1.50.5, 1.54.6 |
| @backstage/plugin-techdocs-nodenpm | v < 1.15.4 | 1.15.4 |
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