CVE-2026-1180

mediumpriority · track · 0EPSS 0.004 · 35 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.41% (35th) EPSS

CVSS 5.8 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:Nsecondary · ENISA EU

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:Nsecondary · secalert@redhat.com USexploitability 3.9 · impact 1.4

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:Nsecondary · OSV

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USCWE-918US

affected products (7)

Products and version ranges known to be affected.

Open Source Keycloak <26.5.6all versionscert_bundDE
Open Source Keycloak OIDC Dynamic Client Registrationall versionscert_bundDEcpe:/a:keycloak:keycloak:oidc_dynamic_client_registration
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Open Source Keycloak< 26.5.6cert_bundDE
Red Hat Red Hat build of Keycloak 26.4< 26.4-14enisa_euvdEU
Red Hat Red Hat build of Keycloak 26.4< 26.4.11-1enisa_euvdEU
Maven org.keycloak:keycloak-adapter-core≤ 25.0.3osvUSpkg:maven/org.keycloak/keycloak-adapter-core

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0152Keycloak (OIDC Dynamic Client Registration): Schwachstelle ermöglicht Manipulation von DateienDeutsch2026-01-19csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Keycloak ausnutzen, um Dateien zu manipulieren und vertrauliche Informationen offenzulegen.
GHSA-7vw6-5q2f-7w5r Keycloak’s OpenID Connect Dynamic Client Registration feature affected by Server-Side Request Forgery (SSRF)2026-01-20ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2026-01-20modified 2026-06-17

references (11)

External citations — patches, advisories, analysis.

scry

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