---
id: CVE-2026-106507
title: Backstage is an open framework for building developer portals
summary: >-
  Backstage is an open framework for building developer portals. Prior to
  1.15.4, the @backstage/plugin-techdocs-node package is affected by techdocs
  arbitrary file read via mkdocs snippets. Unsafe path resolution in TechDocs
  source tree h…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-59
  - CWE-61
vendor: backstage
product: backstage
affected:
  - backstage < 1.54.6
  - plugin-techdocs-node < 1.15.4
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T22:17:06.153'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106507'
references:
  - url: >-
      https://github.com/backstage/backstage/commit/911ca36f10e654c5517da029129230fc05a4f580
    label: security-advisories@github.com
  - url: 'https://github.com/backstage/backstage/releases/tag/v1.54.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/backstage/backstage/security/advisories/GHSA-vmqh-7cj9-mvcj
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T22:23:15.969Z'
---

## Overview

Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by techdocs arbitrary file read via mkdocs snippets. Unsafe path resolution in TechDocs source tree handling allows an authenticated user who can register documentation sources to include content from outside the intended documentation boundary. Depending on deployment, this may expose files readable by the build process. This issue is fixed in version 1.15.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.