4.3
MEDIUM
CVSS 3.1
CVE-2026-9791
Keycloak-rhel9: organization data leak after feature disabled in keycloak
Overview
Description
A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.
Details
INFO
Published Date :
May 28, 2026, 5:16 a.m.
Last Modified :
Oct. 26, 2026, 12:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2026-9791
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Update Keycloak to resolve information disclosure via OIDC tokens and API access.
- Update Keycloak to the latest version.
- Review and restrict API access.
- Validate OIDC token scopes.
Public PoC/Exploit Available at Github
CVE-2026-9791 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-9791.
| URL | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:25097 | |
| https://access.redhat.com/errata/RHSA-2026:25098 | |
| https://access.redhat.com/errata/RHSA-2026:30049 | |
| https://access.redhat.com/errata/RHSA-2026:30050 | |
| https://access.redhat.com/security/cve/CVE-2026-9791 | Mitigation Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2482458 | Issue Tracking Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-9791 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-9791
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Security research on Keycloak: CVEs I reported, each with a reproducible before/after PoC, evidence, and a technical writeup
cve keycloak oidc security-research vulnerability-disclosure
Shell
Updated: 4 months, 2 weeks ago
0 stars
0 fork
0 watcher
Born at : June 8, 2026, 8:34 a.m.
This repo has been linked 9 different CVEs too.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-9791 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9791 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: Red Hat Build of Keycloak de Red Hat, Description: Se encontró una vulnerabilidad en Keycloak. Un usuario autenticado con una membresía de organización existente puede explotar esta vulnerabilidad al acceder a las API orientadas al usuario, como la API de cuenta, o al solicitar un token de OpenID Connect (OIDC) con el ámbito ’organization’. Esto permite que los metadatos de la organización se divulguen en los tokens, incluso después de que un administrador haya deshabilitado explícitamente la función de Organizaciones, lo que podría llevar a decisiones de autorización incorrectas por parte de los servidores de recursos. -
CVE Modified by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:30049 Added Reference https://access.redhat.com/errata/RHSA-2026:30050 Changed Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:build_keycloak:26.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.4', 'versions': [{'status': 'unaffected', 'version': '26.4.13-1', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.4', 'versions': [{'status': 'unaffected', 'version': '26.4-19', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.4', 'versions': [{'status': 'unaffected', 'version': '26.4-19', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.4::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.4.13', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
CVE Modified by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-8', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'keycloak-rhel9-container', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-8', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'keycloak-rhel9-operator-container', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.4-2', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.4', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
CVE Modified by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-8', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'keycloak-rhel9-container', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-8', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'keycloak-rhel9-operator-container', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.4-2', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.4', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-9791', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-28T12:18:58.165713Z'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6.3-3', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-operator-bundle', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6', 'versions': [{'status': 'unaffected', 'version': '26.6-6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhbk/keycloak-rhel9-operator', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:build_keycloak:26.6::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Keycloak 26.6.3', 'packageName': 'rhbk/keycloak-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
CVE Modified by [email protected]
Jun. 10, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:25097 -
CVE Modified by [email protected]
Jun. 10, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:25098 -
Initial Analysis by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:* Added Reference Type Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-9791 Types: Mitigation, Vendor Advisory Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2482458 Types: Issue Tracking, Vendor Advisory -
New CVE Received by [email protected]
May. 28, 2026
Action Type Old Value New Value Added Description A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-863 Added Reference https://access.redhat.com/security/cve/CVE-2026-9791 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2482458
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.