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Build Of Keycloak CVE-2026-0871

MEDIUM
Incorrect Privilege Assignment (CWE-266)
2026-02-27 secalert@redhat.com GHSA-v4jw-m6rm-399h
4.9
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 27, 2026 - 08:17 nvd
MEDIUM 4.9

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 57 maven packages depend on org.keycloak:keycloak-server-spi-private (26 direct, 31 indirect)

Ecosystem-wide dependent count for version 26.5.2.

DescriptionNVD

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.

AnalysisAI

Build Of Keycloak contains a vulnerability that allows attackers to unauthorized changes to user profiles, even when the system is configured to res (CVSS 4.9).

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RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Vendor StatusVendor

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CVE-2026-0871 vulnerability details – vuln.today

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