Server-side Request Forgery (SSRF) Affecting swagger-ui-express package, versions <4.3.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.39% (74th percentile)

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  • Snyk ID SNYK-JS-SWAGGERUIEXPRESS-6815424
  • published 9 May 2024
  • disclosed 9 Dec 2021
  • credit Unknown

How to fix?

Upgrade swagger-ui-express to version 4.3.0 or higher.

Overview

swagger-ui-express is a module that allows you to serve auto-generated swagger-ui generated API docs from express, based on a swagger.json file.

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the ?url parameter, which was intended to allow displaying remote OpenAPI definitions. This functionality may pose a risk for users who host their own SwaggerUI instances. In particular, including remote OpenAPI definitions opens a vector for phishing attacks by abusing the trusted names/domains of self-hosted instances.

NOTE: This vulnerability has also been identified as: CVE-2021-46708

CVSS Scores

version 3.1
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Snyk

Recommended
5.4 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None
Expand this section

NVD

4.3 medium