CVE-2026-96453: high-severity vulnerability in Red Hat AMQ Broker 7
Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8epss 0.2%
A flaw was found in the Keycloak Admin CLI kcadm tool, which is used by administrators to manage Keycloak servers from the command line. When a custom truststore is provided to verify the server identity, the tool incorrectly accepts any self-signed certificate as long as the hostname matches. This allows a network attacker to impersonate the Keycloak server, steal administrative credentials, and perform unauthorized management actions.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Affected products
Red Hat · Red Hat AMQ Broker 7Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.17Red Hat · Red Hat build of Keycloak 26.6Red Hat · Red Hat build of Keycloak 26.6.8Red Hat · Red Hat Fuse 7Red Hat · Red Hat JBoss Enterprise Application Platform 7Red Hat · Red Hat JBoss Enterprise Application Platform 8Red Hat · Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat · Red Hat Satellite 6Red Hat · Red Hat Single Sign-On 7Related CVEs — Red Hat AMQ Broker 7
In the same product, most dangerous first.
CVE-2026-18963CRITICALKeycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypassEPSS 6.6%CVE-2026-93567HIGHIo.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authorityEPSS 2.9%CVE-2026-93569HIGHIo.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authorityEPSS 2.4%CVE-2026-93574MEDIUMIo.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsingEPSS 1.7%CVE-2024-1023MEDIUMIo.vertx/vertx-core: memory leak due to the use of netty fastthreadlocal data structures in vertxEPSS 1.7%CVE-2024-1132HIGHKeycloak: path transversal in redirection validationEPSS 1.6%
References
https://access.redhat.com/errata/RHSA-2026:95759https://access.redhat.com/errata/RHSA-2026:95760https://access.redhat.com/errata/RHSA-2026:95761https://access.redhat.com/errata/RHSA-2026:95762https://access.redhat.com/security/cve/CVE-2026-96453https://bugzilla.redhat.com/show_bug.cgi?id=2539294