4.9

CVE-2026-11986: redhat build_of_keycloak Forced Browsing

CVSS: 4.9v3.1MediumAnalyzed
AliasesCGA-4f84-p4fp-w6vxCGA-695c-4h2w-qh3hCGA-8cc7-9893-wgc5
Published 11-06-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-11986 is a medium (CVSS 4.9) Forced Browsing vulnerability in redhat build_of_keycloak. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.3% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
4.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-06-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

0.00 pp

From 0.30% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard14 products
  • keycloak-26.5All versions (No fix recorded)
  • keycloak-26.5-iamguarded-compatAll versions (No fix recorded)
  • keycloak-26.6All versions (No fix recorded)
  • keycloak-26.6-iamguarded-compatAll versions (No fix recorded)
  • keycloak-fips-26.5All versions (No fix recorded)
Wolfi4 products
  • keycloak-26.5All versions (No fix recorded)
  • keycloak-26.5-iamguarded-compatAll versions (No fix recorded)
  • keycloak-26.6All versions (No fix recorded)
  • keycloak-26.6-iamguarded-compatAll versions (No fix recorded)
Org.keycloak1 product
  • keycloak-rest-admin-ui-ext< 26.7.0
Redhat1 product

4 vendors · 20 products

References

10 links