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Advisory record · GHSA-g78x-7vwx-9f58

Keycloak Admin API allows an administrator with limited privileges to retrieve sensitive custom attributes

CVSS 2.7 LowEPSS 0.0041 · 35th percentile

Published by the GitHub Advisory Database at 2 Feb 2026, 06:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.keycloak:keycloak-servicesMaven>=26.5.0, <26.5.2 || <26.4.926.5.2, 26.4.9
Identifiers
GHSA-g78x-7vwx-9f58 · CVE-2025-13881
Weakness (CWE)
CWE-266
Tags
Published
2 Feb 2026
Updated
13 Feb 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Keycloak's keycloak-services package, versions 26.5.0 up to 26.5.2 and before 26.4.9, is affected. An administrator with limited privileges can retrieve sensitive custom attributes through the Admin API's /unmanagedAttributes endpoint, bypassing User Profile visibility settings. Upgrade to version 26.5.2 or 26.4.9.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
2.7 Low 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0041, the 35th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:21 UTC First seen by agentprime
  2. 31 Oct 2026, 14:21 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.