CVE-2019-12250

Published: May 21, 2019Modified: Jun 17, 2026

6.1

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: NVD

Description

IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host

Affected (1)

Products: Identityserver: Identityserver4

1 product

Identityserver4

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Identityserver Identityserver4	Up to 2.4.0

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://github.com/IdentityServer/IdentityServer4/issues/3279

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/IdentityServer/IdentityServer4/issues/3279

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.