CVSS 4.0
9.4 criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HCVE-2025-34104
Critical (9.4). EPSS 1.9% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-306, CWE-434
- Published
- Modified
- Record from
- the NVD, synced
References
- https://firefart.at/post/turning_piwik_superuser_creds_into_rce/
- https://matomo.org/changelog/piwik-3-0-3/
- https://matomo.org/faq/plugins/faq_21/
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/piwik_superuser_plugin_upload.rb
- https://www.vulncheck.com/advisories/piwik-authenticated-rce-via-custom-plugin-upload