CVE-2026-0871

mediumpriority · track · 0EPSS 0.003 · 28 %ileDEEUJPUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.35% (28th) EPSS
CVSS 4.9 · medium
Is it mine?
11 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

4.9
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · secalert@redhat.com USexploitability 1.2 · impact 3.6
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV
v3.14.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-266USCWE-266USCWE-284US
04

affected products (11)

Products and version ranges known to be affected.

05

advisories (4)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0072Keycloak: Schwachstelle ermöglicht Manipulation von DateienDeutsch2026-01-12csaf · cert_bundDE

    Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Keycloak ausnutzen, um Dateien zu manipulieren.

  • GHSA-v4jw-m6rm-399hKeycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes2026-02-27ghsa · osvUS

    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.

  • BIT-keycloak-2026-0871Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators2026-08-25vendor · osvUS

    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.

  • JVNDB-2026-026852JVN iPedia advisory JVNDB-2026-0268522026-08-05vendor · jvndbJP
06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvcert_bundnvdjvndbNVDCVE.orgMITRE
published 2026-02-27modified 2026-06-17
08

references (12)

External citations — patches, advisories, analysis.

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