What is CVE-2019-12250?

CVE-2019-12250 is a medium-severity vulnerability in Identityserver Identityserver4, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-21.

How severe is CVE-2019-12250?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Identityserver Identityserver4

CVE-2019-12250

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

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (54.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Identityserver Identityserver4
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-12250?: CVE-2019-12250 is a medium-severity vulnerability in Identityserver Identityserver4, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-21.
How severe is CVE-2019-12250?: Medium severity. CVSS v3 base score is 6.1 out of 10.