Is this vulnerability remotely exploitable over the network?

Yes, in environments where users can push changes to repositories that TechDocs processes, an attacker can exploit the issue by modifying `mkdocs.yml` and waiting for the build system to run. The attack path is indirect (via source control and documentation builds), but it can originate from remote contributors.

What level of access does an attacker need?

The attacker must be able to create or alter `mkdocs.yml` in a repository that TechDocs builds. This typically means write access to the documentation repository or the relevant branch in source control.

What is the safest general fix pattern?

Implement a strict allowlist of safe MkDocs configuration keys and drop or reject any unsupported fields before invoking MkDocs. Combine this with isolation of the build environment and reduction of TechDocs process privileges.

Severity:

HIGH RISK

(7.7)

Arbitrary Code Execution via MkDocs Hooks (CWE-94) in Backstage TechDocs Local Runner

CVE-2026-25153

Published:

Jan 30, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Code Injection / Arbitrary Code Execution

CWE:

CWE-94

Impact:

Remote Code Execution on TechDocs build infrastructure

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Code Injection / Arbitrary Code Execution

CWE:

CWE-94

Impact:

Remote Code Execution on TechDocs build infrastructure

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Arbitrary Code Execution via MkDocs Hooks (CWE-94) in Backstage TechDocs Local Runner

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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