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CVE-2026-25152— @backstage/plugin-techdocs-node vulnerable to possible Path Traversal in TechDocs Local Generator

Quick assessment

Affected
backstage backstage
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Backstage是Backstage开源的一个应用软件。后台是一个开放的平台,用于构建开发者门户。 Backstage 1.13.11之前版本和1.14.1之前版本存在路径遍历漏洞，该漏洞源于本地生成器存在路径遍历，可能导致任意文件读取。

CVSS 5.3 · Medium EPSS 0.40% · P34

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-25152

Vulnerability Information
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Vulnerability Title
@backstage/plugin-techdocs-node vulnerable to possible Path Traversal in TechDocs Local Generator
Source: CVE Program / CVE List V5
Vulnerability Description
Backstage is an open framework for building developer portals, and @backstage/plugin-techdocs-node provides common node.js functionalities for TechDocs. In versions of @backstage/plugin-techdocs-node prior to 1.13.11 and 1.14.1, a path traversal vulnerability in the TechDocs local generator allows attackers to read arbitrary files from the host filesystem when Backstage is configured with `techdocs.generator.runIn: local`. When processing documentation from untrusted sources, symlinks within the docs directory are followed by MkDocs during the build process. File contents are embedded into generated HTML and exposed to users who can view the documentation. This vulnerability is fixed in` @backstage/plugin-techdocs-node` versions 1.13.11 and 1.14.1. Some workarounds are available. Switch to `runIn: docker` in `app-config.yaml` and/or restrict write access to TechDocs source repositories to trusted users only.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Backstage 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Backstage是Backstage开源的一个应用软件。后台是一个开放的平台,用于构建开发者门户。 Backstage 1.13.11之前版本和1.14.1之前版本存在路径遍历漏洞，该漏洞源于本地生成器存在路径遍历，可能导致任意文件读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
backstage backstage < 1.13.11 -

II. Public POCs for CVE-2026-25152

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III. Intelligence Information for CVE-2026-25152

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Vendor Advisories for CVE-2026-25152 (1)

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-22

V. Comments for CVE-2026-25152

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