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I. Basic Information for CVE-2026-29137
Vulnerability Information
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Vulnerability Title
Long Subject Untagging
Source: NVD (National Vulnerability Database)
Vulnerability Description
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
SEPPmail Secure Email Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SEPPmail Secure Email Gateway是德国SEPPmail公司的一个电子邮件安全网关。 SEPPmail Secure Email Gateway 15.0.3之前版本存在安全漏洞，该漏洞源于允许攻击者通过构造长主题向用户隐藏安全标签。
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
SEPPmailSecure Email Gateway 0 ~ 15.0.3 -
II. Public POCs for CVE-2026-29137
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III. Intelligence Information for CVE-2026-29137
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IV. Related Vulnerabilities
Same product: Secure Email Gateway
Same vendor: SEPPmail
Same weakness: CWE-20
V. Comments for CVE-2026-29137

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