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I. Basic Information for CVE-2026-35540
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在范围间的资源转移不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Roundcube Webmail 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Roundcube Webmail是Roundcube开源的一款基于浏览器的开源IMAP客户端,它支持地址薄管理、信息搜索、拼写检查等。 Roundcube Webmail 1.6.0至1.6.14之前版本存在安全漏洞,该漏洞源于HTML电子邮件中CSS清理不足,可能导致服务端请求伪造或信息泄露。
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
RoundcubeWebmail 1.6.0 ~ 1.6.14 -
II. Public POCs for CVE-2026-35540
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III. Intelligence Information for CVE-2026-35540
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IV. Related Vulnerabilities
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