6.4

CVE-2020-1727: redhat keycloak Improper Input Validation

CVSS: 6.4v3.1MediumModified
Published 22-06-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-1727 is a medium (CVSS 6.4) Improper Input Validation vulnerability in redhat keycloak. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.80%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 22-06-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.80%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

0.00 pp

From 0.80% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.80%

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

[unknown]1 product
Redhat1 product

2 vendors · 2 products

References

1 links