6.1

CVE-2023-6927: redhat keycloak Open Redirect

CVSS: 6.1v3.1MediumModified
AliasesCGA-86pr-3286-mch8CGA-x4mq-gm6c-98vvGHSA-9vm7-v8wj-3fqw
Published 18-12-2023Last modified 22-09-2026
Open JSON

Vulnerability summary

CVE-2023-6927 is a medium (CVSS 6.1) Open Redirect vulnerability in redhat keycloak. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.5% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
1.11%
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 6 · Duplicates 1 · Related 1
RHSA-2024:0094RHSA-2024:0095RHSA-2024:0096RHSA-2024:0798RHSA-2024:0799RHSA-2024:0800

Timeline

  1. 18-12-2023
    PublishedVulnerability first disclosed.
  2. 22-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.11%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.11% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.11%

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

Redhat2 products
Chainguard1 product
  • keycloak< 23.0.4-r0
Org.keycloak1 product
  • keycloak-core< 23.0.4
Wolfi1 product
  • keycloak< 23.0.4-r0

4 vendors · 5 products

References

20 links
Show all 20 references