Access Control Bypass Affecting org.keycloak:keycloak-server-spi-private package, versions [,26.5.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Mar 2026
- disclosed27 Feb 2026
- creditUnknown
Introduced: 27 Feb 2026
CVE-2026-0871 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-server-spi-private to version 26.5.2 or higher.
Overview
org.keycloak:keycloak-server-spi-private is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Access Control Bypass due to the DefaultAttributes attribute filtering in the user profile management. An attacker with manage-users permission can make unauthorized modifications to user profile attributes even when the “Only administrators can view” policy is enabled by bypassing the edit restriction on unmanaged attributes.