6.5

CVE-2023-0105: redhat keycloak Improper Authentication

Modified
AliasesGHSA-c7xw-p58w-h6fj
Published 11-01-2023Last modified 09-04-2025

Vulnerability summary

CVE-2023-0105 is a medium (CVSS 6.5) Improper Authentication vulnerability in redhat keycloak. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.72%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHSA-2023:7482RHSA-2023:7483RHSA-2023:7484

Timeline

  1. 11-01-2023
    PublishedVulnerability first disclosed.
  2. 09-04-2025
    Last modifiedVulnerability information updated.

Description

A flaw was found in Keycloak. This flaw allows impersonation and lockout due to the email trust not being handled correctly in Keycloak. An attacker can shadow other users with the same email and lockout or impersonate them.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.70% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Org.keycloak1 product
  • keycloak-core< 22.0.1
Redhat1 product

2 vendors · 2 products

References

5 links