How severe is CVE-2011-4941?

No CVSS score has been assigned to CVE-2011-4941 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2011-4941?

CVE-2011-4941 affects the following packages: piwik/piwik (Packagist), matomo/matomo (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2011-4941?

Update piwik/piwik to 1.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-4941 is resolved across your whole dependency graph.

How do I detect CVE-2011-4941 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for piwik/piwik, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2011-4941 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2011-4941 actively exploited in the wild?

No public exploit code has been indexed for CVE-2011-4941 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2011-4941?

CVE-2011-4941 has an EPSS (Exploit Prediction Scoring System) score of 2.3%, placing it in the 83th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2011-4941 published, and has it been updated?

CVE-2011-4941 was published on May 13, 2022 and was last updated on April 12, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2011-4941 — piwik

CVE-2011-4941 is a remote code execution vulnerability in piwik/piwik. A fix is available for piwik/piwik — see the affected versions and patch details below.

Piwik (now Matomo) Vulnerable to Arbitrary Code Execution

Published

May 13, 2022

Updated

Apr 12, 2025

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs83th percentile — riskier than 83% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

2 pkgs affected

🐘piwik/piwik🐘matomo/matomo

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Unspecified vulnerability in Piwik 1.2 through 1.4 allows remote attackers with the view permission to execute arbitrary code via unknown attack vectors.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`piwik/piwik`	≥ 1.2&&< 1.5	1.5`composer require piwik/piwik:^1.5`
🐘Packagist	`matomo/matomo`	≥ 1.2&&< 1.5	1.5`composer require matomo/matomo:^1.5`

Affected Products

1 product · 4 configurations

Application

matomomatomo

4 versions

1.21.2.11.31.4

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for piwik/piwik, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update piwik/piwik to 1.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-4941 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Unspecified vulnerability in Piwik 1.2 through 1.4 allows remote attackers with the view permission to execute arbitrary code via unknown attack vectors.

O3 Security · Impact-Aware SCA

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