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Vulnerabilities

Vulnerability · CVE-2025-34104

An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism.

Published Jul 15, 2025 · catalog updated Jul 14, 2026 · Piwik (now Matomo) Web Analytics Platform

Check if you run it

No confirmed exploitation is on record for CVE-2025-34104. EPSS is 1.91%. Act only if a listed version of Piwik (now Matomo) Web Analytics Platform is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.91%
Remediation
Version ranges on file
Affected products
vendor Piwik (now Matomo) Web Analytics Platform 0 <3.0.3

An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism. In vulnerable versions, an authenticated user with Superuser privileges can upload and activate a malicious plugin (ZIP archive), leading to arbitrary PHP code execution on the underlying system. Starting with version 3.0.3, plugin upload functionality is disabled by default unless explicitly enabled in the configuration file.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Piwik (now Matomo) Web Analytics Platform 0 <3.0.30 <3.0.3

How to fix CVE-2025-34104

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-34104. EPSS is 1.91%. Act only if a listed version of Piwik (now Matomo) Web Analytics Platform is installed.

Which versions are affected?

Compare what you have installed with Piwik (now Matomo) Web Analytics Platform 0 <3.0.3 0 <3.0.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.91%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 15, 2025 · EUVD

    Detected

    An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism. In vulnerable versions, an authenticated user with Superuser privileges can upload and activate a malicious plugin (ZIP archive), leading to arbitrary PHP code execution on the underlying system. Starting with version 3.0.3, plugin upload functionality is disab

  2. Jul 14, 2026 · EUVD

    Updated

    An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism. In vulnerable versions, an authenticated user with Superuser privileges can upload and activate a malicious plugin (ZIP archive), leading to arbitrary PHP code execution on the underlying system. Starting with version 3.0.3, plugin upload functionality is disab

Sources

  • CVE.orgVulnerability recordCVE-2025-34104

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34104

    30-day exploitation probability 1.91%

    first.org
  • EUVDVulnerability recordEUVD-2025-21429

    An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism. In vulnerable versions, an authenticated user with Superuser privileges can upload and activate a malicious plugin (ZIP archive), leading to

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.