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CVE-2025-10044— Keycloak: keycloak error_description injection on error pages

CVSS 4.3 · Medium EPSS 0.04% · P11
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I. Basic Information for CVE-2025-10044

Vulnerability Information
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Vulnerability Title
Keycloak: keycloak error_description injection on error pages
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the error_description query parameter. This text is directly rendered in error pages without validation or sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g., fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a phishing vector, potentially tricking users into contacting malicious actors.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Build of Keycloak 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat build of Keycloak是美国红帽（Red Hat）公司的一款用于单点登录的Web应用。 Red Hat Build of Keycloak存在跨站脚本漏洞，该漏洞源于对error_description参数的错误处理，可能导致钓鱼攻击。
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
Keycloakkeycloak 0 ~ 26.2.9 -
Red HatRed Hat build of Keycloak 26.0 26.0.17-1 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red HatRed Hat build of Keycloak 26.0 26.0-21 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red HatRed Hat build of Keycloak 26.0 26.0-22 ~ * cpe:/a:redhat:build_keycloak:26.0::el9
Red HatRed Hat build of Keycloak 26.0.17-cpe:/a:redhat:build_keycloak:26.0
Red HatRed Hat build of Keycloak 26.2 26.2.9-1 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2 26.2-9 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2 26.2-9 ~ * cpe:/a:redhat:build_keycloak:26.2::el9
Red HatRed Hat build of Keycloak 26.2.9-cpe:/a:redhat:build_keycloak:26.2::el9

II. Public POCs for CVE-2025-10044

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III. Intelligence Information for CVE-2025-10044

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IV. Related Vulnerabilities

Same product: keycloak
Same vendor: Keycloak
Same weakness: CWE-79

V. Comments for CVE-2025-10044

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