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CVSS 7.3 · High EPSS 0.01% · P1
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I. Basic Information for CVE-2026-3872
Vulnerability Information
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Vulnerability Title
Keycloak: keycloak: information disclosure due to redirect_uri validation bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
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，该漏洞源于使用通配符的重定向URI路径绕过，可能导致攻击者窃取访问令牌，造成信息泄露。
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
VendorProductAffected VersionsCPESubscribe
Red HatRed Hat build of Keycloak 26.2 26.2.15-1 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2 26.2-18 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2 26.2-18 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2.15-cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.4 26.4.11-1 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4 26.4-14 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4 26.4-14 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4.11-cpe:/a:redhat:build_keycloak:26.4::el9
II. Public POCs for CVE-2026-3872
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III. Intelligence Information for CVE-2026-3872
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IV. Related Vulnerabilities
Same product: Red Hat build of Keycloak 26.2
Same vendor: Red Hat
Same weakness: CWE-601
V. Comments for CVE-2026-3872

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