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CVE-2026-18963VulnerabilityPublished

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.14 security update on RHEL 7

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 12 Nov 2026, 23:34 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 7.6 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat Single Sign-On 7.6.14 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.6.13, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * Unauthenticated account takeover via reset-credentials flow bypass (CVE-2026-18963)

References

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