CVE-2023-47877 MEDIUM

CVE-2023-47877: WordPress Perfmatters Plugin < 2.2.0 is vulnerable to Cross Site Scripting (XSS)

Vendor Perfmatters

Product Perfmatters

Weakness CWE-79 · XSS

Published November 30, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Perfmatters allows Stored XSS.This issue affects Perfmatters: from n/a before 2.2.0.

Explanation of Vulnerability in Simple Terms

02Summary

Perfmatters versions before 2.2.0 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including administrators. The vulnerability requires user interaction to trigger. Scope is changed, meaning the impact extends beyond the vulnerable component itself.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers when they view affected pages.

Potential impact on your site

04Site Impact

Attackers with low-privilege accounts can steal admin credentials, modify site content, or compromise other users.

Conditions required to exploit

05Prerequisites

Authenticated account with low privileges; victim must view a page containing the injected script.

Key dates

06Disclosure timeline

November 30, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-47877 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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