Red Hat Keycloak/Single Sign-On UMA Implementation permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.5$5k-$25k5.79-

Summaryinfo

A vulnerability was found in Red Hat Keycloak and Single Sign-On and classified as problematic. This impacts an unknown function of the component UMA Implementation. Executing a manipulation can lead to permission. This vulnerability is handled as CVE-2026-94217. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Red Hat Keycloak and Single Sign-On (the affected version is unknown). It has been declared as problematic. This vulnerability affects an unknown code of the component UMA Implementation. The manipulation with an unknown input leads to a permission vulnerability. The CWE definition for the vulnerability is CWE-275. As an impact it is known to affect integrity. CVE summarizes:

A flaw was found in the User-Managed Access (UMA) implementation of Keycloak. The issue occurs in the authorization token endpoint when processing permission tickets. If two different users own resources with the same name, the system incorrectly merges the permissions from both resources when one user requests an authorization token. This allows an attacker to gain access scopes on a victim's resource that were never intended to be shared.

The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2026-94217 since 09/21/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/21/2026). The MITRE ATT&CK project declares the attack technique as T1222.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-83845) and CERT Bund (WID-SEC-2026-3484). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source Keycloak

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.5
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permission
CWE: CWE-275 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/21/2026 Advisory disclosed
09/21/2026 +0 days CVE reserved
09/21/2026 +0 days VulDB entry created
09/21/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-94217 (🔒)
GCVE (CVE): GCVE-0-2026-94217
GCVE (VulDB): GCVE-100-408076
EUVD: 🔒
CERT Bund: WID-SEC-2026-3484 - Keycloak: Mehrere Schwachstellen

Entryinfo

Created: 09/21/2026 09:19
Updated: 09/21/2026 15:05
Changes: 09/21/2026 09:19 (60), 09/21/2026 11:58 (1), 09/21/2026 15:05 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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