CVE-2025-56422
Received Received - Intake
Deserialization Vulnerability in LimeSurvey Enables Remote Code Execution

Publication date: 2026-03-10

Last updated on: 2026-03-20

Assigner: MITRE

Description
A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code on the server.
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Meta Information
Published
2026-03-10
Last Modified
2026-03-20
Generated
2026-06-16
AI Q&A
2026-03-10
EPSS Evaluated
2026-06-14
NVD
CVE-2025-56422
EUVD
EUVD-2025-208504
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
limesurvey limesurvey to 6.14.3 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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Executive Summary

CVE-2025-56422 is a remote code execution vulnerability in LimeSurvey caused by unsafe deserialization of user-controlled input.

Specifically, LimeSurvey versions prior to 6.15.0+250623 improperly handle the deserialization process, allowing an attacker to supply a specially crafted serialized object.

This malicious input can trigger arbitrary code execution within the application context on the server.

The vulnerability is exploitable remotely.

Impact Analysis

This vulnerability allows a remote attacker to execute arbitrary code on the server running LimeSurvey.

Successful exploitation could lead to full compromise of the server, including unauthorized access, data theft, data manipulation, or disruption of services.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate the CVE-2025-56422 vulnerability, you should upgrade LimeSurvey to version 6.15.0+250623 or later.

This update addresses the unsafe deserialization issue that allows remote code execution by properly handling user-controlled input.

Further details and updates can be found on the official LimeSurvey website and the LimeSurvey GitHub repository issue #4329.

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