Cross-site Scripting (XSS) Affecting identityserver4 package, versions [1.0.0,1.5.3)[2.0.0,2.1.3)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.12% (49th percentile)

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  • Snyk IDSNYK-DOTNET-IDENTITYSERVER4-174371
  • published18 Apr 2019
  • disclosed20 Mar 2018
  • creditUnknown

Introduced: 20 Mar 2018

CVE-2018-8899  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade IdentityServer4 to version 1.5.3, 2.1.3 or higher.

Overview

IdentityServer4 is an OpenID Connect and OAuth 2.0 Framework for ASP.NET Core.

Affected versions of this package are vulnerable to Cross-site Scripting (XSS) because the redirect URI is unencoded on the authorization response page.

Details

CVSS Scores

version 3.1