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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-16104— Keycloak-services: keycloak-services: authenticator config endpoint exposes raw recaptcha secrets to view-only admins

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存在信任管理问题漏洞，该漏洞源于keycloak-services组件认证配置端点未对敏感配置值（如reCAPTCHA密钥）进行屏蔽，可能导致具有查看权限的管理员请求时泄露第三方服务凭据。

CVSS 4.3 · Medium EPSS 0.46% · P37

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

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-2026-16104

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: authenticator config endpoint exposes raw recaptcha secrets to view-only admins
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys, when they are requested by administrators with view-only permissions. This can lead to the exposure of third-party service credentials to unauthorized personnel or through administrative logs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的不恰当跨边界移除
Source: CVE Program / CVE List V5
Vulnerability Title
Keycloak 信任管理问题漏洞
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存在信任管理问题漏洞，该漏洞源于keycloak-services组件认证配置端点未对敏感配置值（如reCAPTCHA密钥）进行屏蔽，可能导致具有查看权限的管理员请求时泄露第三方服务凭据。
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-2026-16104

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-16104

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-16104 (4)

Same Patch Batch · Red Hat · 2026-07-17 · 8 CVEs total

CVE-2026-15943 5.5 MEDIUM Keycloak-services: keycloak-services: oidc idp update reuses masked client secret after to
CVE-2026-16093 5.4 MEDIUM Keycloak-services: keycloak-services: required signed-jwt assertion policy can be bypassed
CVE-2026-16089 5.4 MEDIUM Keycloak-services: keycloak-services: authorization codes can be retargeted to another cli
CVE-2026-16106 4.9 MEDIUM Keycloak-services: keycloak-services: incorrect authorization in admin role-composite dele
CVE-2026-16072 4.9 MEDIUM Keycloak-services: keycloak-services: organization invitation link exposure allows unautho
CVE-2026-16103 4.3 MEDIUM Keycloak-services: keycloak-services: incomplete fix for ciba brute-force lockout bypass a
CVE-2026-16108 4.3 MEDIUM Keycloak-services: keycloak-services: realm default-group reads disclose hidden groups und

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.6
Same vendor: Red Hat
Same weakness: CWE-212

V. Comments for CVE-2026-16104

No comments yet

Leave a comment