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Circumvention of XSS Protection in TechDocs

Moderate
Rugvip published GHSA-5j94-f3mf-8685 Sep 17, 2024

Package

npm @backstage/plugin-techdocs-backend (npm)

Affected versions

<1.10.13

Patched versions

1.10.13

Description

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

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

CVE ID

CVE-2024-46976

Weaknesses