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Vulnerability Details :

CVE-2026-0871

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-27 Feb, 2026 | 07:30
Updated At-27 Feb, 2026 | 07:30
Rejected At-
Credits

Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators

A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:27 Feb, 2026 | 07:30
Updated At:27 Feb, 2026 | 07:30
Rejected At:
â–¼CVE Numbering Authority (CNA)
Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators

A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat build of Keycloak 26.4
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
rhbk/keycloak-operator-bundle
CPEs
  • cpe:/a:redhat:build_keycloak:26.4::el9
Default Status
affected
Versions
Unaffected
  • From 26.4.9-1 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat build of Keycloak 26.4
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
rhbk/keycloak-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:26.4::el9
Default Status
affected
Versions
Unaffected
  • From 26.4-11 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat build of Keycloak 26.4
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
rhbk/keycloak-rhel9-operator
CPEs
  • cpe:/a:redhat:build_keycloak:26.4::el9
Default Status
affected
Versions
Unaffected
  • From 26.4-10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat build of Keycloak 26.4.9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhbk/keycloak-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:26.4::el9
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat JBoss Enterprise Application Platform 8
Collection URL
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:jboss_enterprise_application_platform:8
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat JBoss Enterprise Application Platform Expansion Pack
Collection URL
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:jbosseapxp
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Single Sign-On 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:red_hat_single_sign_on:7
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-266Incorrect Privilege Assignment
Type: CWE
CWE ID: CWE-266
Description: Incorrect Privilege Assignment
Metrics
VersionBase scoreBase severityVector
3.14.9MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Version: 3.1
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Exploits

Credits

Timeline
EventDate
Reported to Red Hat.2026-01-13 08:32:26
Made public.2025-01-13 08:08:00
Event: Reported to Red Hat.
Date: 2026-01-13 08:32:26
Event: Made public.
Date: 2025-01-13 08:08:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/errata/RHSA-2026:2365
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2366
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-0871
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2428881
issue-tracking
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:2365
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:2366
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-0871
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2428881
Resource:
issue-tracking
x_refsource_REDHAT
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:27 Feb, 2026 | 08:17
Updated At:27 Feb, 2026 | 14:06

A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.14.9MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Type: Primary
Version: 3.1
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-266Primarysecalert@redhat.com
CWE ID: CWE-266
Type: Primary
Source: secalert@redhat.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://access.redhat.com/errata/RHSA-2026:2365secalert@redhat.com
N/A
https://access.redhat.com/errata/RHSA-2026:2366secalert@redhat.com
N/A
https://access.redhat.com/security/cve/CVE-2026-0871secalert@redhat.com
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=2428881secalert@redhat.com
N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:2365
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2026:2366
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-0871
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2428881
Source: secalert@redhat.com
Resource: N/A

Change History

0
Information is not available yet

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Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-6.5||MEDIUM
EPSS-0.06% / 19.93%
||
7 Day CHG~0.00%
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
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Action-Not Available
Vendor-Project QuayRed Hat, Inc.
Product-quayquayRed Hat Quay 3
CWE ID-CWE-266
Incorrect Privilege Assignment
CVE-2025-2843
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-8.8||HIGH
EPSS-0.04% / 11.06%
||
7 Day CHG~0.00%
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Updated-19 Dec, 2025 | 18:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
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Action-Not Available
Vendor-rhobsRed Hat, Inc.
Product-Cluster Observability Operator 1.3.1observability-operator
CWE ID-CWE-266
Incorrect Privilege Assignment
CVE-2020-1704
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7||HIGH
EPSS-0.11% / 29.46%
||
7 Day CHG~0.00%
Published-17 Feb, 2020 | 16:38
Updated-04 Aug, 2024 | 06:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An insecure modification vulnerability in the /etc/passwd file was found in all versions of OpenShift ServiceMesh (maistra) before 1.0.8 in the openshift/istio-kialia-rhel7-operator-container. An attacker with access to the container could use this flaw to modify /etc/passwd and escalate their privileges.

Action-Not Available
Vendor-Red Hat, Inc.
Product-openshift_service_meshopenshift-service-mesh/kiali-rhel7-operator
CWE ID-CWE-266
Incorrect Privilege Assignment
CWE ID-CWE-732
Incorrect Permission Assignment for Critical Resource
CVE-2020-1705
Matching Score-6
Assigner-Red Hat, Inc.
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Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7||HIGH
EPSS-0.04% / 12.43%
||
7 Day CHG~0.00%
Published-19 Mar, 2020 | 15:14
Updated-04 Aug, 2024 | 06:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability was found in openshift/template-service-broker-operator in all 4.x.x versions prior to 4.3.0, where an insecure modification vulnerability in the /etc/passwd file was found in the openshift/template-service-broker-operator. An attacker with access to the container could use this flaw to modify /etc/passwd and escalate their privileges.

Action-Not Available
Vendor-Red Hat, Inc.
Product-template_service_broker_operatoropenshift/template-service-broker-operator
CWE ID-CWE-266
Incorrect Privilege Assignment
CWE ID-CWE-732
Incorrect Permission Assignment for Critical Resource
CVE-2020-1708
Matching Score-6
Assigner-Red Hat, Inc.
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Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-7||HIGH
EPSS-0.11% / 29.15%
||
7 Day CHG~0.00%
Published-07 Feb, 2020 | 20:37
Updated-04 Aug, 2024 | 06:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

It has been found in openshift-enterprise version 3.11 and all openshift-enterprise versions from 4.1 to, including 4.3, that multiple containers modify the permissions of /etc/passwd to make them modifiable by users other than root. An attacker with access to the running container can exploit this to modify /etc/passwd to add a user and escalate their privileges. This CVE is specific to the openshift/mysql-apb.

Action-Not Available
Vendor-Red Hat, Inc.
Product-openshift_container_platformopenshift/mysql-apb
CWE ID-CWE-266
Incorrect Privilege Assignment
CWE ID-CWE-269
Improper Privilege Management
CVE-2023-2485
Matching Score-4
Assigner-GitLab Inc.
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Matching Score-4
Assigner-GitLab Inc.
CVSS Score-4.4||MEDIUM
EPSS-0.05% / 16.88%
||
7 Day CHG-0.10%
Published-07 Jun, 2023 | 00:00
Updated-20 Mar, 2025 | 17:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Incorrect Privilege Assignment in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 14.1 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A malicious maintainer in a project can escalate other users to Owners in that project if they import members from another project that those other users are Owners of.

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-266
Incorrect Privilege Assignment
Details not found