| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.3 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Keycloak on Red Hat. It has been rated as problematic. Impacted is an unknown function of the component SOAP Handler. The manipulation leads to information exposure. This vulnerability is traded as CVE-2026-9794. It is possible to initiate the attack remotely. There is no exploit available.
Details
A vulnerability was found in Keycloak on Red Hat (version unknown). It has been rated as problematic. This issue affects an unknown function of the component SOAP Handler. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-209. The product generates an error message that includes sensitive information about its environment, users, or associated data. Impacted is confidentiality. The summary by CVE is:
A flaw was found in Keycloak. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted SOAP requests to the SAML ECP (Security Assertion Markup Language Enhanced Client or Proxy) endpoint with varying client IDs. By observing distinct faultstrings in the responses, the attacker can determine the client's protocol type, leading to information disclosure.
The advisory is shared at access.redhat.com. The identification of this vulnerability is CVE-2026-9794 since 05/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.
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-2026-32709) and CERT Bund (WID-SEC-2026-1708). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Affected
- Red Hat Enterprise Linux
- Open Source Keycloak
Product
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 5.3
CNA Vector (redhat): 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Information exposureCWE: CWE-209 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
05/28/2026 Advisory disclosed05/28/2026 CVE reserved
05/28/2026 VulDB entry created
09/01/2026 VulDB entry last update
Sources
Advisory: access.redhat.comStatus: Not defined
CVE: CVE-2026-9794 (🔒)
GCVE (CVE): GCVE-0-2026-9794
GCVE (VulDB): GCVE-100-366569
EUVD: 🔒
CERT Bund: WID-SEC-2026-1708 - Keycloak: Mehrere Schwachstellen
Entry
Created: 05/28/2026 07:14Updated: 09/01/2026 07:40
Changes: 05/28/2026 07:14 (61), 05/28/2026 10:49 (1), 09/01/2026 07:40 (7)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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