Unauthenticated File Download Vulnerability in LimeSurvey by LimeSurvey GmbH
CVE-2025-34120
Key Information:
- Vendor
Limesurvey Gmbh
- Status
- Vendor
- CVE Published:
- 16 July 2025
Badges
What is CVE-2025-34120?
An unauthenticated file download vulnerability is present in specific versions of LimeSurvey. The issue arises due to inadequate validation of serialized input at the admin backup endpoint, which leads to the exploitation of arbitrary file paths. Attackers can craft a payload to access sensitive files stored on the host system, including OS and configuration files, compromising the security of the application. This vulnerability allows unauthorized users to download files packaged in a ZIP archive without requiring authentication, posing serious security risks.
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Affected Version(s)
LimeSurvey 2.0+ <= 2.06+ Build 151014
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
50% chance of being exploited in the next 30 days.
CVSS V4
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved