Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-25153— @backstage/plugin-techdocs-node vulnerable to arbitrary code execution via MkDocs hooks

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之前版本存在代码注入漏洞，该漏洞源于允许在mkdocs.yml中配置恶意钩子，可能导致任意Python代码执行。

CVSS 7.7 · High EPSS 0.61% · P48

Affected Version Matrix 2

VendorProduct Version RangeStatus
backstage backstage < 1.13.11 affected
= 1.14.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-25153

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
@backstage/plugin-techdocs-node vulnerable to arbitrary code execution via MkDocs hooks
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, when TechDocs is configured with `runIn: local`, a malicious actor who can submit or modify a repository's `mkdocs.yml` file can execute arbitrary Python code on the TechDocs build server via MkDocs hooks configuration. @backstage/plugin-techdocs-node versions 1.13.11 and 1.14.1 contain a fix. The fix introduces an allowlist of supported MkDocs configuration keys. Unsupported configuration keys (including `hooks`) are now removed from `mkdocs.yml` before running the generator, with a warning logged to indicate which keys were removed. Users of `@techdocs/cli` should also upgrade to the latest version, which includes the fixed `@backstage/plugin-techdocs-node` dependency. Some workarounds are available. Configure TechDocs with `runIn: docker` instead of `runIn: local` to provide container isolation, though it does not fully mitigate the risk. Limit who can modify `mkdocs.yml` files in repositories that TechDocs processes; only allow trusted contributors. Implement PR review requirements for changes to `mkdocs.yml` files to detect malicious `hooks` configurations before they are merged. Use MkDocs < 1.4.0 (e.g., 1.3.1) which does not support hooks. Note: This may limit access to newer MkDocs features. Building documentation in CI/CD pipelines using `@techdocs/cli` does not mitigate this vulnerability, as the CLI uses the same vulnerable `@backstage/plugin-techdocs-node` package.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Backstage 代码注入漏洞
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之前版本存在代码注入漏洞，该漏洞源于允许在mkdocs.yml中配置恶意钩子，可能导致任意Python代码执行。
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-2026-25153

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-25153

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-25153 (1)

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-94

V. Comments for CVE-2026-25153

No comments yet

Leave a comment