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01 Record

CVE-2023-6134

Keycloak: reflected xss via wildcard in oidc redirect_uri

MediumPUBLISHEDCNA: redhat
CNA base score4.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
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02 Description

Keycloak: reflected xss via wildcard in oidc redirect_uri

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.31% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 70.5% of scored records. A rank, not a probability.
NVD base score
5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-09-22.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-12-14 21:42Z2 YR AGO
Last updated
2026-09-22 03:35Z1 MO AGO
Reserved
2023-11-14
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 4.6)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.2
Document digest
85bb0e1e09c8c542c19aae8767d42b186b78d955909bb8a98039d16d154e291c

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat build of Keycloak 22Not specified—
Red HatRed Hat build of Keycloak 22.0.7Not specified—
Red HatRed Hat Single Sign-On 7Not specified—
Red HatRed Hat Single Sign-On 7.6 for RHEL 7Not specified—
Red HatRed Hat Single Sign-On 7.6 for RHEL 8Not specified—
Red HatRed Hat Single Sign-On 7.6 for RHEL 9Not specified—
Red HatRHEL-8 based Middleware ContainersNot specified—
Red HatSingle Sign-On 7.6.6Not specified—

06 References