CVE-2025-34120
An unauthenticated file download vulnerability exists in LimeSurvey versions from 2.0+ up to and including 2.06+ Build 151014.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 1.74% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22, CWE-306
- Source
- disclosure@vulncheck.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.