Red Hat Keycloak OpenID Connect Dynamic Client Registration server-side request forgery

CVSS Meta Temp Score
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CTI Interest Score
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6.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Red Hat Keycloak and classified as critical. Impacted is an unknown function of the component OpenID Connect Dynamic Client Registration. The manipulation results in server-side request forgery. This vulnerability is known as CVE-2026-1180. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Red Hat Keycloak (the affected version is unknown). Affected is an unknown code of the component OpenID Connect Dynamic Client Registration. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.

The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2026-1180 since 01/19/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 01/20/2026).

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 vulnerability database at CERT Bund (WID-SEC-2026-0152). 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: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.8
CNA Vector (redhat): 🔒

CVSSv2info

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

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
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

01/19/2026 CVE reserved
01/20/2026 +1 days Advisory disclosed
01/20/2026 +0 days VulDB entry created
01/20/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2026-1180 (🔒)
GCVE (CVE): GCVE-0-2026-1180
GCVE (VulDB): GCVE-100-341940
CERT Bund: WID-SEC-2026-0152 - Keycloak (OIDC Dynamic Client Registration): Schwachstelle ermöglicht Manipulation von Dateien

Entryinfo

Created: 01/20/2026 14:04
Updated: 01/20/2026 18:14
Changes: 01/20/2026 14:04 (61), 01/20/2026 18:14 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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