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I. Basic Information for CVE-2026-34720
Vulnerability Information

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Vulnerability Title
Zammad has an origin validation error in SSO mechanism
Source: NVD (National Vulnerability Database)
Vulnerability Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
源验证错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
Zammad 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zammad是德国Zammad公司的一套票务管理软件。 Zammad 7.0.1之前版本和6.5.4之前版本存在访问控制错误漏洞,该漏洞源于SSO机制未验证标头来源,可能导致安全风险。
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
zammadzammad < 6.5.4 -
II. Public POCs for CVE-2026-34720
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III. Intelligence Information for CVE-2026-34720
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