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I. Basic Information for CVE-2026-35391
Vulnerability Information

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Vulnerability Title
Bulwark Webmail getClientIP() trusted client-controlled X-Forwarded-For value, enabling rate limit bypass and audit log forgery
Source: NVD (National Vulnerability Database)
Vulnerability Description
Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftmost) entry of the X-Forwarded-For header, which is fully controlled by the client. An attacker could forge their source IP address to bypass IP-based rate limiting (enabling brute-force attacks against the admin login) or forge audit log entries (making malicious activity appear to originate from arbitrary IP addresses). This vulnerability is fixed in 1.4.11.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不可信的源
Source: NVD (National Vulnerability Database)
Vulnerability Title
Bulwark Webmail 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bulwark Webmail是Bulwark Mail开源的一个自托管网页邮件客户端。 Bulwark Webmail 1.4.11之前版本存在安全漏洞,该漏洞源于getClientIP函数信任客户端可控的X-Forwarded-For标头,可能导致绕过基于IP的速率限制或伪造审计日志。
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
bulwarkmailwebmail < 1.4.11 -
II. Public POCs for CVE-2026-35391
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III. Intelligence Information for CVE-2026-35391
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