CVE-2023-40604 MEDIUM

CVE-2023-40604: WordPress Cookies by JM Plugin <= 1.0 is vulnerable to Cross Site Scripting (XSS)

Vendor Jes Madsen

Product Cookies by JM

Weakness CWE-79 · XSS

Published September 27, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

5.9/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Jes Madsen Cookies by JM plugin <= 1.0 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Cookies by JM version 1.0 and earlier contains a cross-site scripting (XSS) vulnerability in how it handles user input. An authenticated administrator with high privileges can inject malicious scripts that execute in other users' browsers when they interact with the affected page. The vulnerability requires user interaction to trigger and can affect the confidentiality, integrity, and availability of the site.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers to steal data or modify site content.

Potential impact on your site

04Site Impact

A malicious admin can compromise other users' sessions and modify site content or steal sensitive information.

Conditions required to exploit

05Prerequisites

Attacker must have high-level admin privileges and the victim must visit a page containing the injected payload.

Key dates

06Disclosure timeline

September 27, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-40604 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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