CVE-2025-34120— LimeSurvey 2.0+ - 2.06+ Unauthenticated Arbitrary File Download via Serialized Backup Payload
Quick assessment
Affected
LimeSurvey GmbH LimeSurvey
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.
LimeSurvey（PHPSurveyor）是LimeSurvey团队的一套开源的在线问卷调查程序，它支持调查程序开发、调查问卷发布以及数据收集等功能。 LimeSurvey 2.06+ Build 151014及之前版本存在安全漏洞，该漏洞源于未验证序列化输入，可能导致读取主机系统上的任意文件。
Public Exploits 1
Metasploit · 1
limesurvey_file_download.rb [auxiliary]
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2025-34120
Vulnerability Information
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Vulnerability Title
LimeSurvey 2.0+ - 2.06+ Unauthenticated Arbitrary File Download via Serialized Backup Payload
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated file download vulnerability exists in LimeSurvey versions from 2.0+ up to and including 2.06+ Build 151014. The application fails to validate serialized input to the admin backup endpoint (`index.php/admin/update/sa/backup`), allowing attackers to specify arbitrary file paths using a crafted `datasupdateinfo` payload. The files are packaged in a ZIP archive and made available for download without authentication. This vulnerability can be exploited to read arbitrary files on the host system, including sensitive OS and configuration files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
LimeSurvey 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LimeSurvey（PHPSurveyor）是LimeSurvey团队的一套开源的在线问卷调查程序，它支持调查程序开发、调查问卷发布以及数据收集等功能。 LimeSurvey 2.06+ Build 151014及之前版本存在安全漏洞，该漏洞源于未验证序列化输入，可能导致读取主机系统上的任意文件。
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 |
|---|---|---|---|---|
| LimeSurvey GmbH | LimeSurvey | 2.0+ ~ 2.06+ Build 151014 | - |
|
II. Public POCs for CVE-2025-34120
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-34120 (1)
-
🔗 Multiple critical vulnerabilities in Lime Survey - SEC Consult Read full article third-party-advisory technical-description
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V. Comments for CVE-2025-34120
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