How severe is GHSA-gvxv-p9rv-gmcg?

GHSA-gvxv-p9rv-gmcg has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-gvxv-p9rv-gmcg?

GHSA-gvxv-p9rv-gmcg affects the following packages: brotkrueml/typo3-matomo-integration (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-gvxv-p9rv-gmcg?

Update brotkrueml/typo3-matomo-integration to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-gvxv-p9rv-gmcg is resolved across your whole dependency graph.

How do I detect GHSA-gvxv-p9rv-gmcg in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for brotkrueml/typo3-matomo-integration, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-gvxv-p9rv-gmcg if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-gvxv-p9rv-gmcg actively exploited in the wild?

No public exploit code has been indexed for GHSA-gvxv-p9rv-gmcg 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 GHSA-gvxv-p9rv-gmcg?

GHSA-gvxv-p9rv-gmcg has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 49th 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.

What type of vulnerability is GHSA-gvxv-p9rv-gmcg?

GHSA-gvxv-p9rv-gmcg is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-gvxv-p9rv-gmcg published, and has it been updated?

GHSA-gvxv-p9rv-gmcg was published on June 17, 2022 and was last updated on December 6, 2023. 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

MEDIUM severity

brotkrueml/typo3-matomo-integration vulnerable to Cross-Site ScriptingGHSA-gvxv-p9rv-gmcg

MEDIUM

GHSA-gvxv-p9rv-gmcg is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in brotkrueml/typo3-matomo-integration. A fix is available for brotkrueml/typo3-matomo-integration — see the affected versions and patch details below.

Also known asBIT-matomo-2022-33156CVE-2022-33156

Published

Jun 17, 2022

Updated

Dec 6, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk+0.01%

Lower risk than most CVEs49th percentile — riskier than 49% of all scored CVEsHighest risk

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐘brotkrueml/typo3-matomo-integration

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

The extension fails to properly encode user input for output in HTML context. A TYPO3 backend user account is required to exploit the vulnerability.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`brotkrueml/typo3-matomo-integration`	all versions	1.3.2`composer require brotkrueml/typo3-matomo-integration:^1.3.2`

Affected Products

1 product · 1 configurations

Application

integrationmatomo

< 1.3.2

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for brotkrueml/typo3-matomo-integration, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update brotkrueml/typo3-matomo-integration to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-gvxv-p9rv-gmcg is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

The extension fails to properly encode user input for output in HTML context. A TYPO3 backend user account is required to exploit the vulnerability.

O3 Security · Impact-Aware SCA

Is GHSA-gvxv-p9rv-gmcg in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jun 17, 2022

Last updated

Dec 6, 2023

Identifiers

GHSA-gvxv-p9rv-gmcg

BIT-matomo-2022-33156

References

Advisorynvd.nist.gov · CVE 2022 33156 Webgithub.com · CVE 2022 33156.yaml Webtypo3.org · typo3 ext sa 2022 011 Packagegithub.com · typo3 matomo integration

Related vulnerabilities

This CVE is medium severity; 5 of 8 other CVEs with CWE-79 are rated as high or higher (top: moderate).

CVE-2026-126079CVE-2026-126359CVE-2026-126069CVE-2026-126362CVE-2026-126203CVE-2026-126206CVE-2026-126363CVE-2026-126209Browse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedDec 6, 2023