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CVE-2025-3501— Org.keycloak.protocol.services: keycloak hostname verification

Quick assessment

Affected
CVE-2025-3501
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开源的一种开源身份和访问管理解决方案。 Keycloak存在安全漏洞，该漏洞源于信任存储证书验证被跳过，可能导致绕过验证。

CVSS 8.2 · High EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process

Affected Version Matrix 13

VendorProduct Version RangeStatus
None None 25.0.0< 25.* affected
26.0.0< 26.0.11 affected
26.1.0< 26.1.* unknown
26.2.0< 26.2.2 affected
Red Hat Red Hat Build of Keycloak any unaffected
Red Hat Red Hat build of Keycloak 26 any unaffected
Red Hat Red Hat build of Keycloak 26.0 26.0.11-2< * unaffected
26.0-12< * unaffected
26.0-13< * unaffected
Red Hat Red Hat build of Keycloak 26.2 26.2.5-1< * unaffected
26.2-4< * unaffected
26.2-4< * unaffected
Red Hat Red Hat Single Sign-On 7 any unaffected

I. Basic Information for CVE-2025-3501

Vulnerability Information
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Vulnerability Title
Org.keycloak.protocol.services: keycloak hostname verification
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Keycloak. By setting a verification policy to 'ALL', the trust store certificate verification is skipped, which is unintended.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对宿主不匹配的证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak开源的一种开源身份和访问管理解决方案。 Keycloak存在安全漏洞，该漏洞源于信任存储证书验证被跳过，可能导致绕过验证。
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
- - 25.0.0 ~ 25.* -
Red Hat Red Hat Build of Keycloak - cpe:/a:redhat:build_keycloak:26.0
Red Hat Red Hat build of Keycloak 26 - cpe:/a:redhat:build_keycloak:26.2
Red Hat Red Hat build of Keycloak 26.0 26.0.11-2 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red Hat Red Hat build of Keycloak 26.0 26.0-12 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red Hat Red Hat build of Keycloak 26.0 26.0-13 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red Hat Red Hat build of Keycloak 26.2 26.2.5-1 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat Red Hat build of Keycloak 26.2 26.2-4 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat Red Hat build of Keycloak 26.2 26.2-4 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat Red Hat Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2025-3501

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-3501

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Vendor Advisories for CVE-2025-3501 (4)

IV. Related Vulnerabilities

Same weakness: CWE-297

V. Comments for CVE-2025-3501

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