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Vulnerability record · CVE-2025-56422 · published 10 March 2026

CVE-2025-56422: Limesurvey deserialization of untrusted data vulnerability

Limesurvey · Limesurvey

A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code on the server.

9.8 CVSS 3.1 Critical EPSS 0.85% · top 43.4% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
5 Jul 2026Last modified by NVD

Description

A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code on the server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/hongancalif/security-advisories/blob/main/CVE-2025-56422.md Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-48008Limesurvey unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the plugin manager of LimeSurvey v5.4.15 allows attackers to execute arbitrary code via a crafted PHP file.EPSS 1.3%9.8CVE-2019-25019Limesurvey sql injection vulnerabilityLimeSurvey before 4.0.0-RC4 allows SQL injection via the participant model.EPSS 1.3%9.8CVE-2020-11455LimeSurvey file manager path traversalLimeSurvey before 4.1.12+200324 contains a path traversal flaw in application/controllers/admin/LimeSurveyFileManager.php. An unauthenticated remote …EPSS 97%analysed9.8CVE-2019-16184Limesurvey csv injection vulnerabilityA CSV injection vulnerability was found in Limesurvey before 3.17.14 that allows survey participants to inject commands via their survey responses th…EPSS 1.7%9.8CVE-2019-9960Limesurvey path traversal vulnerabilityThe downloadZip function in application/controllers/admin/export.php in LimeSurvey through 3.16.1+190225 allows a relative path.EPSS 13%9.8CVE-2018-17057Tecnick tcpdf deserialization of untrusted data vulnerabilityAn issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.EPSS 26%9.3CVE-2025-41375Limesurvey sql injection vulnerabilitySQL Injection vulnerability in Limesurvey v2.65.1+170522. This vulnerability allows an attacker to retrieve, create, update and delete database via '…EPSS 0.63%9.3CVE-2008-2570Limesurvey vulnerabilityMultiple unspecified vulnerabilities in LimeSurvey (formerly PHPSurveyor) before 1.71 have unknown impact and attack vectors.EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2025-56422), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.