What is the CVSS score of CVE-2023-6923?

CVE-2023-6923 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 2.5%.

Is there a patch available for CVE-2023-6923?

Yes, a patch is available for CVE-2023-6923. Update the affected software to the latest version immediately.

Matomo CVE-2023-6923

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2024-02-29 security@wordfence.com

WordPress XSS Matomo

6.1

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-79 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Output encoding, context-aware escaping MITRE ATT&CK 2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. EPSS exploitation probability: 2.53%.
Exploit ScenarioDerived	A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 2.5% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

The Matomo Analytics - Ethical Stats. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. The Matomo Analytics - Ethical Stats. Powerful Insights. plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the idsite parameter in all versions up to, and including, 4.15.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Affected products include: Matomo.

Know when Matomo gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 6.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Apr 08, 2026 - 17:22 nvd

Patch available

CVE Published

Feb 29, 2024 - 01:42 nvd

MEDIUM 6.1

DescriptionCVE.org

The Matomo Analytics - Ethical Stats. Powerful Insights. plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the idsite parameter in all versions up to, and including, 4.15.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Threat Intelligence Overview

EPSS Score

2.5%

Top 15% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 2.5%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +30

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:a:matomo:matomo:*:*:*:*:*:wordpress:*:*

More in Matomo

View all

CVE-2015-7815 HIGH This Week POC

7.5 Nov 16

Directory traversal vulnerability in core/ViewDataTable/Factory.php in Piwik before 2.15.0 allows remote attackers to in

CVE-2015-7816 HIGH This Week POC

7.5 Nov 16

The DisplayTopKeywords function in plugins/Referrers/Controller.php in Piwik before 2.15.0 allows remote attackers to co

CVE-2020-29578 CRITICAL Act Now

9.8 Dec 08

The official piwik Docker images before fpm-alpine (Alpine specific) contain a blank password for a root user. Rated cri

CVE-2019-12215 MEDIUM This Month POC

4.3 May 20

A full path disclosure vulnerability was discovered in Matomo v3.9.1 where a user can trigger a particular error to disc

CVE-2022-33156 MEDIUM This Month

6.1 Jul 12

The matomo_integration (aka Matomo Integration) extension before 1.3.2 for TYPO3 allows XSS. Rated medium severity (CVSS

CVE-2026-78850 MEDIUM This Month

5.0 Oct 15

Server-side request forgery in Matomo 5.11.2 allows an attacker holding a low-privilege authenticated account to make th

CVE-2013-2633 MEDIUM This Month

5.0 Mar 21

Piwik before 1.11 accepts input from a POST request instead of a GET request in unspecified circumstances, which might a

CVE-2025-4415 MEDIUM This Month

4.8 May 21

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Piwik PRO a

CVE-2012-4541 MEDIUM This Month

4.3 Nov 19

Cross-site scripting (XSS) vulnerability in Piwik before 1.9 allows remote attackers to inject arbitrary web script or H

CVE-2013-1844 MEDIUM This Month

4.3 Mar 21

Cross-site scripting (XSS) vulnerability in Piwik before 1.11 allows remote attackers to inject arbitrary web script or

Same weakness CWE-79 – Cross-site Scripting (XSS)

View all

CVE-2020-3580 MEDIUM POC

6.1

CVE-2013-7389 MEDIUM POC

4.3

CVE-2021-25299 MEDIUM POC

6.1

CVE-2014-2120 MEDIUM

6.1

CVE-2023-40000 HIGH POC

8.3

CVE-2016-8581 MEDIUM POC

6.1

CVE-2013-5223 MEDIUM POC

5.4

CVE-2025-52367 MEDIUM POC

5.4

Same technique XSS

View all

CVE-2017-9248 CRITICAL POC

9.8

CVE-2013-1710 CRITICAL POC

10.0

CVE-2024-52875 HIGH POC

8.8

References

Advisories & patches

PATCH https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3031495%40matomo&new=3031495%40matomo&sfp_email=&sfph_mail= ADVISORY https://vuldb.com/vuln/253187 REF https://www.wordfence.com/threat-intel/vulnerabilities/id/2e2d54eb-c176-49c4-a4fc-833e17189cad?source=cve

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back