CVE-2013-2633: Matomo/matomo Piwik (now Matomo) Reveals Sensitive Vulnerability

MODERATE
Advisory Identifier: GHSA-v8h8-93mx-82h5
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CWE-20
Published
Advisory Summary

CVE-2013-2633 is a MODERATE piwik (now matomo) reveals sensitive vulnerability (CWE-20: Improper Input Validation) affecting Matomo/matomo libraries in the Packagist ecosystem. The issue involves piwik (now matomo) reveals sensitive information by accepting input from `post` requests. Remediation is available by upgrading affected packages to version 1.11.

CVE-2013-2633 at a Glance

CVE Identifier CVE-2013-2633
GHSA Identifier GHSA-v8h8-93mx-82h5
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-20: Improper Input Validation
Affected Product Matomo/matomo
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2013-2633

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

matomo/matomo fixed: 1.11 
Upgrade matomo/matomo to 1.11
piwik/piwik fixed: 1.11 
Upgrade piwik/piwik to 1.11
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 matomo/matomo

How to Check if You Are Affected

To determine whether your application is affected by CVE-2013-2633, inspect your project dependencies for Matomo/matomo:

inspect dependencies for matomo/matomo

Analyze the terminal output to locate any version of Matomo/matomo in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.11), 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Matomo/matomo, 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

Piwik before 1.11 accepts input from a POST request instead of a GET request in unspecified circumstances, which might allow attackers to obtain sensitive information by leveraging the logging of parameters.

CVE-2013-2633 Affected Matomo/matomo Versions

2 component(s)
Fixed Versions:
1.11
Product / Package Ecosystem Affected Versions Fixed Version
matomo/matomo
 Packagist
< 1.11
1.11
piwik/piwik
 Packagist
< 1.11
1.11

References

NVD — CVE-2013-2633 NVD
https://nvd.nist.gov/vuln/detail/CVE-2013-2633
Matomo/matomo Source Repository REPOSITORY
https://github.com/matomo-org/matomo
web.archive.org/web/20130313093839/... WEB
https://web.archive.org/web/20130313093839/http://piwik.org/blog/2013/03/piwik-1-11

Frequently Asked Questions

What is CVE-2013-2633?
CVE-2013-2633 is a security vulnerability in Matomo/matomo involving Piwik (now Matomo) Reveals Sensitive Information by Accepting Input from `POST` Requests under CWE-20: Improper Input Validation.
Which Matomo/matomo versions are affected?
Affected versions include releases prior to 1.11 across affected packages: matomo/matomo, piwik/piwik.
What version fixes CVE-2013-2633?
Upgrading to 1.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is matomo/matomo affected?
Yes, matomo/matomo is affected in releases prior to 1.11. Upgrade your dependency to 1.11 or later.
Is piwik/piwik affected?
Yes, piwik/piwik is affected in releases prior to 1.11. Upgrade your dependency to 1.11 or later.
What CWE is associated with CVE-2013-2633?
CVE-2013-2633 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Packagist dependencies for CVE-2013-2633?
Run the dependency tree command: 'inspect dependencies for matomo/matomo'. 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-v8h8-93mx-82h5",
  "modified" : "2025-04-12T00:13:50Z",
  "published" : "2022-05-13T01:30:28Z",
  "aliases" : [ "CVE-2013-2633" ],
  "summary" : "Piwik (now Matomo) Reveals Sensitive Information by Accepting Input from `POST` Requests",
  "details" : "Piwik before 1.11 accepts input from a POST request instead of a GET request in unspecified circumstances, which might allow attackers to obtain sensitive information by leveraging the logging of parameters.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS: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:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "matomo/matomo"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.11"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "piwik/piwik"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.11"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2013-2633"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/matomo-org/matomo"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20130313093839/http://piwik.org/blog/2013/03/piwik-1-11"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-12T00:13:50Z",
    "nvd_published_at" : "2013-03-21T21:55:00Z"
  }
}