CVE-2026-9800 (GCVE-0-2026-9800)

Vulnerability from cvelistv5 – Published: 2026-06-25 16:16 – Updated: 2026-08-06 12:08
VLAI
Title
Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison
Summary
A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-1025 - Comparison Using Wrong Factors
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:30049 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30050 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30084 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50846 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50847 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-9800 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2482472 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.13-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-19 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.14-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-22 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4.13     cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4.14     cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.4-2 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
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Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-8 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
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Red Hat Red Hat build of Keycloak 26.6.4     cpe:/a:redhat:build_keycloak:26.6::el9
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Red Hat Red Hat build of Quarkus     cpe:/a:redhat:quarkus:3
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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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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.13-1 , < * (rpm)
Unaffected: 26.4.14-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-19 , < * (rpm)
Unaffected: 26.4-22 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
Date Public
2026-05-19 00:00
Credits
Red Hat would like to thank Bas Levering for reporting this issue.
Show details on NVD website
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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.