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CVE-2026-41232— Froxlor has an Email Sender Alias Domain Ownership Bypass via Wrong Array Index that Allows Cross-Customer Email Spoofing

CVSS 5.0 · Medium EPSS 0.03% · P10
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I. Basic Information for CVE-2026-41232

Vulnerability Information
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Vulnerability Title
Froxlor has an Email Sender Alias Domain Ownership Bypass via Wrong Array Index that Allows Cross-Customer Email Spoofing
Source: NVD (National Vulnerability Database)
Vulnerability Description
Froxlor is open source server administration software. Prior to version 2.3.6, in `EmailSender::add()`, the domain ownership validation for full email sender aliases uses the wrong array index when splitting the email address, passing the local part instead of the domain to `validateLocalDomainOwnership()`. This causes the ownership check to always pass for non-existent "domains," allowing any authenticated customer to add sender aliases for email addresses on domains belonging to other customers. Postfix's `sender_login_maps` then authorizes the attacker to send emails as those addresses. Version 2.3.6 fixes the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Froxlor 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Froxlor是Froxlor团队的一套轻量级服务器管理软件。 Froxlor 2.3.6之前版本存在安全漏洞，该漏洞源于EmailSender::add()中域所有权验证使用了错误的数组索引，导致任何经过身份验证的客户可以为其他客户的域添加发件人别名。
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
froxlorfroxlor < 2.3.6 -

II. Public POCs for CVE-2026-41232

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III. Intelligence Information for CVE-2026-41232

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Same Patch Batch · froxlor · 2026-04-23 · 6 CVEs total

CVE-2026-4122810.0 CRITICALFroxlor has Local File Inclusion via path traversal in API `def_language` parameter that l
CVE-2026-412299.1 CRITICALFroxlor has a PHP Code Injection via Unescaped Single Quotes in userdata.inc.php Generatio
CVE-2026-412308.5 HIGHFroxlor has a BIND Zone File Injection via Unsanitized DNS Record Content in DomainZones::
CVE-2026-412317.5 HIGHFroxlor has Incomplete Symlink Validation in DataDump.add() that Allows Arbitrary Director
CVE-2026-412335.4 MEDIUMFroxlor has a Reseller Domain Quota Bypass via Unvalidated adminid Parameter in Domains.ad

IV. Related Vulnerabilities

Same product: froxlor
Same vendor: froxlor
Same weakness: CWE-863

V. Comments for CVE-2026-41232

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