Server-side Request Forgery (SSRF) Affecting @backstage/plugin-techdocs-node package, versions <1.14.6>=1.15.0 <1.15.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Oct 2026
- disclosed7 Oct 2026
- creditUnknown
Introduced: 7 Oct 2026
NewCVE-2026-106557 (opens in a new tab)How to fix?
Upgrade @backstage/plugin-techdocs-node to version 1.14.6, 1.15.4 or higher.
Overview
@backstage/plugin-techdocs-node is a Common node.js functionalities for TechDocs, to be shared between techdocs-backend plugin and techdocs-cli
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the sanitizeMkdocsYml function in mkdocsPatchers.ts, where the pymdownx.snippets MkDocs Markdown extension is permitted without constraining its configuration options. An authenticated attacker can supply a malicious mkdocs.yml with pymdownx.snippets configured to use a remote base_path or url_download option, causing the TechDocs build process to fetch arbitrary URLs from the server's network context, exposing internal resources.