What is CVE-2020-10776?

CVE-2020-10776 is a medium-severity vulnerability in Red Hat Keycloak, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-11-17.

How severe is CVE-2020-10776?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2020-10776 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Red Hat Keycloak

CVE-2020-10776

A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (51.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Redhat Keycloak
N/a Keycloak — versions before version 12.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

secalert@redhat.com (x_refsource_MISC, Mitigation, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-10776?: CVE-2020-10776 is a medium-severity vulnerability in Red Hat Keycloak, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-11-17.
How severe is CVE-2020-10776?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2020-10776 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.