CVE-2025-56421: Limesurvey/limesurvey SQL Injection Vulnerability

HIGH
Advisory Identifier: GHSA-rccq-2fxq-7x3h
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CVSS 7.5
CWE-89
Published
Advisory Summary

CVE-2025-56421 is a HIGH (CVSS 7.5) sql injection vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting Limesurvey/limesurvey libraries in the Packagist ecosystem. The issue involves limesurvey is vulnerable to sql injection. Remediation is available by upgrading affected packages to version 6.15.4.

CVE-2025-56421 at a Glance

CVE Identifier CVE-2025-56421
GHSA Identifier GHSA-rccq-2fxq-7x3h
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Affected Product Limesurvey/limesurvey
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-56421

To remediate this vulnerability, upgrade all affected Limesurvey/limesurvey dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

limesurvey/limesurvey fixed: 6.15.4 
Upgrade limesurvey/limesurvey to 6.15.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for limesurvey/limesurvey

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-56421, inspect your project dependencies for Limesurvey/limesurvey:

inspect dependencies for limesurvey/limesurvey

Analyze the terminal output to locate any version of Limesurvey/limesurvey in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.15.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In Limesurvey/limesurvey, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

SQL Injection vulnerability in LimeSurvey before v.6.15.4+250710 allows a remote attacker to obtain sensitive information from the database.

CVE-2025-56421 Affected Limesurvey/limesurvey Versions

1 component(s)
Fixed Versions:
6.15.4
Product / Package Ecosystem Affected Versions Fixed Version
limesurvey/limesurvey
 Packagist
< 6.15.4
6.15.4

References

NVD — CVE-2025-56421 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-56421
Limesurvey/limesurvey Source Repository REPOSITORY
https://github.com/LimeSurvey/LimeSurvey/pull/4328
Security Fix Commit FIX COMMIT
https://github.com/LimeSurvey/LimeSurvey/commit/d6c3c780cdd17d5eef1c8c69ad0105beffa2374f
Limesurvey/limesurvey Source Repository REPOSITORY
https://github.com/LimeSurvey/LimeSurvey
Limesurvey/limesurvey Source Repository REPOSITORY
https://github.com/hongancalif/security-advisories/blob/main/CVE-2025-56421.md
limesurvey.com WEB
http://limesurvey.com

Frequently Asked Questions

What is CVE-2025-56421?
CVE-2025-56421 is a security vulnerability in Limesurvey/limesurvey involving LimeSurvey is vulnerable to SQL injection under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection').
Which Limesurvey/limesurvey versions are affected?
Affected versions include releases prior to 6.15.4 across affected packages: limesurvey/limesurvey.
What version fixes CVE-2025-56421?
Upgrading to 6.15.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is limesurvey/limesurvey affected?
Yes, limesurvey/limesurvey is affected in releases prior to 6.15.4. Upgrade your dependency to 6.15.4 or later.
What is the CVSS score of CVE-2025-56421?
CVE-2025-56421 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2025-56421?
CVE-2025-56421 is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.).
How can I check Packagist dependencies for CVE-2025-56421?
Run the dependency tree command: 'inspect dependencies for limesurvey/limesurvey'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rccq-2fxq-7x3h",
  "modified" : "2026-03-11T21:11:55Z",
  "published" : "2026-03-10T18:31:18Z",
  "aliases" : [ "CVE-2025-56421" ],
  "summary" : "LimeSurvey is vulnerable to SQL injection",
  "details" : "SQL Injection vulnerability in LimeSurvey before v.6.15.4+250710 allows a remote attacker to obtain sensitive information from the database.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "limesurvey/limesurvey"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.15.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-56421"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/LimeSurvey/LimeSurvey/pull/4328"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/LimeSurvey/LimeSurvey/commit/d6c3c780cdd17d5eef1c8c69ad0105beffa2374f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/LimeSurvey/LimeSurvey"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hongancalif/security-advisories/blob/main/CVE-2025-56421.md"
  }, {
    "type" : "WEB",
    "url" : "http://limesurvey.com"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-89" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-11T21:11:55Z",
    "nvd_published_at" : "2026-03-10T18:17:58Z"
  }
}