PT-2026-22311 · Red Hat · Keycloak

Osidb Bzimport · Published 2026-02-27 · Updated 2026-03-05 · CVE-2026-0871

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

Description An issue exists in Keycloak where an administrator possessing manage-users permission can circumvent the intended restriction of the "Only administrators can view" setting for unmanaged attributes. This bypass allows administrators to modify these attributes, potentially leading to unauthorized changes to user profiles despite system configurations designed to prevent such modifications. The issue involves improper access control.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Incorrect Privilege Assignment

Improper Access Control

Weakness Enumeration

CWE-266

CWE-284

Related Identifiers

CVE-2026-0871

GHSA-V4JW-M6RM-399H

Affected Products

Keycloak

References · 15

• https://access.redhat.com/errata/RHSA-2026:2366 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2428881 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:2365 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0871 · Security Note
• https://osv.dev/vulnerability/GHSA-v4jw-m6rm-399h · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-0871 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-0871 · Vendor Advisory
• https://github.com/keycloak/keycloak · Note
• https://github.com/keycloak/keycloak/issues/45873 · Note
• https://github.com/keycloak/keycloak/commit/9d0f679ecea405958f167fcd0f4a6db6ae32c3fa · Note
• https://t.me/cveNotify/153441 · Telegram Post
• https://twitter.com/CVEnew/status/2027380180197441614 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2027428625616601243 · Twitter Post
• https://t.me/CVEtracker/45955 · Telegram Post
• https://t.me/cveNotify/154256 · Telegram Post