CVE-2026-2733 (GCVE-0-2026-2733)

Vulnerability from cvelistv5 – Published: 2026-02-19 07:48 – Updated: 2026-03-06 03:31
VLAI?
Title
Org.keycloak/keycloak-services: keycloak: missing check on disabled client for docker registry protocol
Summary
A flaw was identified in the Docker v2 authentication endpoint of Keycloak, where tokens continue to be issued even after a Docker registry client has been administratively disabled. This means that turning the client “Enabled” setting to OFF does not fully prevent access. As a result, previously valid credentials can still be used to obtain authentication tokens. This weakens administrative controls and could allow unintended access to container registry resources.
Severity ?
3.8 (Low)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CWE
Assigner
References
https://access.redhat.com/errata/RHSA-2026:3947 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3948 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-2733 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2440895 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.10-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-12 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-12 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4.10     cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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    Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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    Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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    Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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    Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
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Date Public ?
2026-02-19 00:00
Credits
Red Hat would like to thank Joy Gilbert and Reynaldo Immanuel for reporting this issue.
Show details on NVD website
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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