Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-18214— Keycloak-services: keycloak-services: google external access-token exchange bypasses hosted-domain restriction

Quick assessment

Affected
Red Hat Red Hat build of Keycloak 26.6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Keycloak是Keycloak组织开源的一种身份和访问管理解决方案。 Keycloak存在授权问题漏洞，该漏洞源于令牌交换功能未检查Google Workspace域限制，可能导致来自不同域的合法Google账户的攻击者绕过安全检查，访问Keycloak领域。

CVSS 6.8 · Medium EPSS 0.40% · P34

Affected Version Matrix 9

VendorProduct Version RangeStatus
Red Hat Red Hat build of Keycloak 26.6 26.6.7-3< * unaffected
26.6-20< * unaffected
26.6-20< * unaffected
Red Hat Red Hat build of Keycloak 26.6.7 any unaffected
any unaffected
any unaffected
Red Hat Red Hat Data Grid 8 any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack any unaffected
Red Hat Red Hat Single Sign-On 7 any unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-18214

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Keycloak-services: keycloak-services: google external access-token exchange bypasses hosted-domain restriction
Source: CVE Program / CVE List V5
Vulnerability Description
Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange feature, which allows swapping a Google token for a Keycloak token, does not check these domain restrictions. This means an attacker with a valid Google account from a different domain could bypass the security check and gain access to the Keycloak realm.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Keycloak 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak组织开源的一种身份和访问管理解决方案。 Keycloak存在授权问题漏洞，该漏洞源于令牌交换功能未检查Google Workspace域限制，可能导致来自不同域的合法Google账户的攻击者绕过安全检查，访问Keycloak领域。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Keycloak 26.6 26.6.7-3 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat build of Keycloak 26.6 26.6-20 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat build of Keycloak 26.6 26.6-20 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat build of Keycloak 26.6.7 - cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat build of Keycloak 26.6.7 - cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat build of Keycloak 26.6.7 - cpe:/a:redhat:build_keycloak:26.6::el9
Red Hat Red Hat Data Grid 8 - cpe:/a:redhat:jboss_data_grid:8
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack - cpe:/a:redhat:jbosseapxp
Red Hat Red Hat Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2026-18214

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-18214

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-18214 (4)

Same Patch Batch · Red Hat · 2026-07-31 · 14 CVEs total

CVE-2026-10079 8.5 HIGH Stackrox: stackrox: deploy-time policy enforcement and visibility bypass via label injecti
CVE-2026-18141 8.2 HIGH Aap-gateway: aap-gateway: authentication bypass in event-driven ansible via forged http he
CVE-2026-15722 7.5 HIGH 389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_
CVE-2026-11770 7.5 HIGH 389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check
CVE-2026-18215 6.8 MEDIUM Keycloak-services: keycloak-services: microsoft external access-token exchange bypasses co
CVE-2026-18208 6.5 MEDIUM Keycloak-services: keycloak-services: inactive out-of-audience token introspection leaks s
CVE-2026-18203 6.5 MEDIUM Keycloak-services: keycloak-services: group policy extendchildren matches sibling group pa
CVE-2026-16105 4.9 MEDIUM Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresou
CVE-2026-18218 4.2 MEDIUM Keycloak-services: keycloak-services: client not-before revocation ignored when realm not-
CVE-2026-18211 4.2 MEDIUM Keycloak-services: keycloak-services: secure-client-uris policy bypass via localhost-prefi
CVE-2026-18206 3.7 LOW Keycloak-services: keycloak-services: client policy source-host wildcard domain matching b
CVE-2026-18217 3.4 LOW Keycloak-services: keycloak-services: saml http-redirect binding response preserves query
CVE-2026-18209 3.4 LOW Keycloak-services: keycloak-services: oidc redirect_uri fragment bypass in http parameter

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.6
Same vendor: Red Hat
Same weakness: CWE-862