Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2023-6134
Red Hat Red Hat build of Keycloak 22 — Keycloak: reflected xss via wildcard in oidc redirect_uri
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L R C L L N 5.4 .0132 69.8 —
AFFECTED
Product Versions Fixed
Red Hat build of Keycloak 22 unspecified 22.0.7-1
Red Hat build of Keycloak 22 unspecified 22-6
Red Hat build of Keycloak 22 unspecified 22-9
Red Hat build of Keycloak 22.0.7 unspecified —
Red Hat Single Sign-On 7 unspecified —
Red Hat Single Sign-On 7.6 for RHEL 7 unspecified 0:18.0.11-2.redhat_00003.1.el7sso
Red Hat Single Sign-On 7.6 for RHEL 7 unspecified 0:18.0.12-1.redhat_00001.1.el7sso
Red Hat Single Sign-On 7.6 for RHEL 8 unspecified 0:18.0.11-2.redhat_00003.1.el8sso
Red Hat Single Sign-On 7.6 for RHEL 8 unspecified 0:18.0.12-1.redhat_00001.1.el8sso
Red Hat Single Sign-On 7.6 for RHEL 9 unspecified 0:18.0.11-2.redhat_00003.1.el9sso
+ 5 more
TIMELINE
Nov 14 Reserved by redhat
Dec 14 Published (CNA: redhat)
Sep 22 EXPLOIT PUBLISHED — CVE-2023-6134 (Red Hat build of Keycloak 22). Public exploit reference added.
Sep 22 RESCORED — CVE-2023-6134 (Red Hat build of Keycloak 22). CVSS 4.6 → 5.4 (NVD).
Description
A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| November 14, 2023 | Reserved | Reserved by redhat |
| December 14, 2023 | Published | Published (CNA: redhat) |
| September 22, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2023-6134 (Red Hat build of Keycloak 22). Public exploit reference added. |
| September 22, 2026 | RESCORED | RESCORED — CVE-2023-6134 (Red Hat build of Keycloak 22). CVSS 4.6 → 5.4 (NVD). |
Affected
Affected products and packages — 15 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat build of Keycloak 22 | — | — | 22.0.7-1 |
| Red Hat | Red Hat build of Keycloak 22 | — | — | 22-6 |
| Red Hat | Red Hat build of Keycloak 22 | — | — | 22-9 |
| Red Hat | Red Hat build of Keycloak 22.0.7 | — | — | — |
| Red Hat | Red Hat Single Sign-On 7 | — | — | — |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 | — | — | 0:18.0.11-2.redhat_00003.1.el7sso |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 | — | — | 0:18.0.12-1.redhat_00001.1.el7sso |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 8 | — | — | 0:18.0.11-2.redhat_00003.1.el8sso |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 8 | — | — | 0:18.0.12-1.redhat_00001.1.el8sso |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 9 | — | — | 0:18.0.11-2.redhat_00003.1.el9sso |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 9 | — | — | 0:18.0.12-1.redhat_00001.1.el9sso |
| Red Hat | RHEL-8 based Middleware Containers | — | — | 7.6-38 |
| Red Hat | RHEL-8 based Middleware Containers | — | — | 7.6.6-2 |
| Red Hat | RHEL-8 based Middleware Containers | — | — | 7.6-41 |
| Red Hat | Single Sign-On 7.6.6 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-6134 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
