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CVE-2026-3977— projectsend AJAX Endpoints authorization

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 r1945及之前版本存在安全漏洞，该漏洞源于缺少授权，可能导致未经授权的访问。

CVSS 6.3 · Medium EPSS 0.37% · P28

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-3977

Vulnerability Information
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Vulnerability Title
projectsend AJAX Endpoints authorization
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in projectsend up to r1945. The affected element is an unknown function of the component AJAX Endpoints. The manipulation leads to missing authorization. The attack can be initiated remotely. The identifier of the patch is 35dfd6f08f7d517709c77ee73e57367141107e6b. To fix this issue, it is recommended to deploy a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ProjectSend 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 r1945及之前版本存在安全漏洞，该漏洞源于缺少授权，可能导致未经授权的访问。
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-2026-3977

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III. Intelligence Information for CVE-2026-3977

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Patches & Fixes for CVE-2026-3977 (1)

Vendor Advisories for CVE-2026-3977 (1)

Proof of Concept for CVE-2026-3977 (2)

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

CVE-2026-4039 6.3 MEDIUM OpenClaw Skill Env applySkillConfigenvOverrides code injection
CVE-2026-4016 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-2026-4045 3.7 LOW projectsend Auth.php response discrepancy
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-862

V. Comments for CVE-2026-3977

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