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I. Basic Information for CVE-2026-25529
Vulnerability Information

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Vulnerability Title
Postal has HTML injection / XSS in message view
Source: NVD (National Vulnerability Database)
Vulnerability Description
Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's "send/raw" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Postal 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Postal是Postal开源的一个完整且功能齐全的邮件服务器。供网站和 Web 服务器使用。 Postal 3.3.5之前版本存在跨站脚本漏洞,该漏洞源于API的send/raw方法允许包含未转义数据,可能导致HTML注入攻击。
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
postalserverpostal < 3.3.5 -
II. Public POCs for CVE-2026-25529
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III. Intelligence Information for CVE-2026-25529
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IV. Related Vulnerabilities
V. Comments for CVE-2026-25529

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