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CVE-2026-18963VulnerabilityPublished

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.14 for OpenShift image security update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-18963· Critical 9.1

Public exploit available (Exploit-DB) · CVSS 9.1 Critical.

Data as of 13 Nov 2026, 00:05 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.19.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 18 Aug 2026

  2. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  3. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Red Hat, Inc.

    , 13 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 16 minutes after disclosure

  4. First Exploit-DB entry (opens in a new tab)

    Keycloak 26.7.2 - Unauthenticated Account Takeover

    , 64 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat build of Keycloak 26.4rhbk/keycloak-operator-bundleAffected–Fixed in–
Red Hat build of Keycloak 26.4rhbk/keycloak-rhel9Affected–Fixed in–
Red Hat build of Keycloak 26.4rhbk/keycloak-rhel9-operatorAffected–Fixed in–
Red Hat build of Keycloak 26.4.15keycloak-servicesAffected–Fixed in–
Red Hat build of Keycloak 26.4.15rhbk-openshift-rhel9/rhbk-openshift-rhel9Affected–Fixed in–
Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundleAffected–Fixed in–

Description

Red Hat Single Sign-On is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat Single Sign-On for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. This erratum releases a new image for Red Hat Single Sign-On 7.6.14 for use within the OpenShift Container Platform 3.10, OpenShift Container Platform 3.11, and within the OpenShift Container Platform 4.3 cloud computing Platform-as-a-Service (PaaS) for on-premise or private cloud deployments, aligning with the standalone product release. This security update has moderate impact. Security fixes: * Unauthenticated account takeover via reset-credentials flow bypass (CVE-2026-18963)

References

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