CVE-2025-34120

16.07.2025, 21:15

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.

Path Traversal

Provider	Type	Base Score	Vector
NIST	NIST	UNKNOWN	---
VulnCheck	CNA	---	---
CISA-ADP	ADP	---	---

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References

https://packetstorm.news/files/id/180855

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/admin/http/limesurvey_file_download.rb

https://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-lime-survey/

https://web.archive.org/web/20210123073627/https://www.limesurvey.org/blog/22-security/136-limesurvey-security-advisory-10-2015

https://www.vulncheck.com/advisories/limesurvey-unauthenticated-arbitrary-file-download