6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2024-46976

GHSA ID

GHSA-5j94-f3mf-8685

EPSS Score

0.2066%

CWE

CWE-79

Published

9/17/2024

Updated

9/17/2024

KEV Status

Technology

JavaScript

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2024-46976

CVE-2024-46976: @backstage/plugin-techdocs-backend vulnerable to circumvention of cross site scripting protection

Impact

An attacker with control of the contents of the TechDocs storage buckets is able to inject executable scripts in the TechDocs content that will be executed in the victim's browser when browsing documentation or navigating to an attacker provided link.

Patches

This has been fixed in the 1.10.13 release of the @backstage/plugin-techdocs-backend package.

References

If you have any questions or comments about this advisory:

Open an issue in the Backstage repository Visit our Discord, linked to in Backstage README

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2024-46976

CVE-2024-46976:

6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2024-46976

GHSA ID

GHSA-5j94-f3mf-8685

EPSS Score

0.2066%

CWE

CWE-79

Published

9/17/2024

Updated

9/17/2024

KEV Status

Technology

JavaScript

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
@backstage/plugin-techdocs-backend	npm	< 1.10.13	1.10.13

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from insufficient sanitization/validation when processing user-controlled TechDocs content. Key points:

CWE-79 (XSS) and CWE-693 (protection failure) indicate a failure in input sanitization mechanisms
The attack vector requires serving malicious content from storage buckets
The backend's content serving pipeline (createRouter) and asset handling (StaticAssetsStore) are logical points where:
- HTML content might be served without proper sanitization
- Security headers like Content-Security-Policy might be misconfigured
- File type validation might be insufficient
Medium confidence due to lack of direct commit/patch details, but alignment with TechDocs architecture and vulnerability patterns

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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6.5

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2024-46976: @backstage/plugin-techdocs-backend vulnerable to circumvention of cross site scripting protection

Impact

Patches

References

CVE-2024-46976:

6.5

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

CVE-2024-46976: @backstage/plugin-techdocs-backend vulnerable to circumvention of cross site scripting protection

Impact

Patches

References

Technical Details

6.5

6.5

Basic Information

Basic Information

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI