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CVE-2026-4045— projectsend Auth.php response discrepancy

Quick assessment

Affected
n/a projectsend
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ProjectSend（cFTP）是ProjectSend开源的一套基于PHP和MySQL的自托管应用程序。 ProjectSend（cFTP） r1945及之前版本存在安全漏洞，该漏洞源于文件includes/Classes/Auth.php对参数ldap_email的错误操作，可能导致响应差异。

CVSS 3.7 · Low EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-4045

Vulnerability Information
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Vulnerability Title
projectsend Auth.php response discrepancy
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in projectsend up to r1945. This impacts an unknown function of the file includes/Classes/Auth.php. Executing a manipulation of the argument ldap_email can lead to observable response discrepancy. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
ProjectSend（cFTP） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ProjectSend（cFTP）是ProjectSend开源的一套基于PHP和MySQL的自托管应用程序。 ProjectSend（cFTP） r1945及之前版本存在安全漏洞，该漏洞源于文件includes/Classes/Auth.php对参数ldap_email的错误操作，可能导致响应差异。
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

Vendor Product Affected Versions CPE Subscribe
- projectsend r1945 cpe:2.3:a:projectsend:projectsend:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-4045

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III. Intelligence Information for CVE-2026-4045

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Vendor Advisories for CVE-2026-4045 (3)

Same Patch Batch · n/a · 2026-03-12 · 20 CVEs total

CVE-2026-4039 6.3 MEDIUM OpenClaw Skill Env applySkillConfigenvOverrides code injection
CVE-2026-3977 6.3 MEDIUM projectsend AJAX Endpoints authorization
CVE-2026-4016 5.3 MEDIUM GPAC SVG Parser load_svg.c svgin_process out-of-bounds write
CVE-2026-4015 5.3 MEDIUM GPAC TeXML File load_text.c txtin_process_texml stack-based overflow
CVE-2026-4044 3.8 LOW projectsend Delete import-orphans.php realpath path traversal
CVE-2026-4040 3.3 LOW OpenClaw File Existence tools.exec.safeBins information exposure
CVE-2026-25817 HMS Ewon Flexy和HMS Networks HMS Cosy+ 安全漏洞
CVE-2026-25823 HMS Ewon Flexy和HMS Networks HMS Cosy+ 安全漏洞
CVE-2026-25818 HMS Cosy+和HMS Ewon Flexy 安全漏洞
CVE-2026-25819 HMS Cosy+和HMS Ewon Flexy 安全漏洞
CVE-2025-61154 libredwg 安全漏洞
CVE-2025-70245 D-Link DIR-513 安全漏洞
CVE-2025-70873 SQLite 安全漏洞
CVE-2025-66955 Asseco SEE Live 安全漏洞
CVE-2026-26793 GL-iNet GL-AR300M16 安全漏洞
CVE-2026-26792 GL-iNet GL-AR300M16 安全漏洞
CVE-2026-26794 GL-iNet GL-AR300M16 安全漏洞
CVE-2026-26795 GL-iNet GL-AR300M16 安全漏洞
CVE-2026-26791 GL-iNet GL-AR300M16 安全漏洞

IV. Related Vulnerabilities

Same product: projectsend
Same vendor: n/a
Same weakness: CWE-204

V. Comments for CVE-2026-4045

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