4.8

CVE-2020-10776: redhat keycloak Cross-site Scripting

CVSS: 4.8v3.1MediumModified
AliasesGHSA-484q-784p-8m5h
Published 17-11-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-10776 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in redhat keycloak. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.3% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.78%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHSA-2020:4929RHSA-2020:4930RHSA-2020:4932

Timeline

  1. 17-11-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.78%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

0.00 pp

From 0.78% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.78%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Org.keycloak2 products
  • keycloak-server-spi-private< 12.0.0
  • keycloak-services< 12.0.0
Redhat1 product

2 vendors · 3 products

References

3 links