CVE-2023-49836 MEDIUM

CVE-2023-49836: WordPress Cookie Bar Plugin <= 2.0 is vulnerable to Cross Site Scripting (XSS)

Vendor Brontobytes

Product Cookie Bar

Weakness CWE-79 · XSS

Published December 14, 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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Brontobytes Cookie Bar allows Stored XSS.This issue affects Cookie Bar: from n/a through 2.0.

Explanation of Vulnerability in Simple Terms

02Summary

Cookie Bar versions up to 2.0 contain a cross-site scripting vulnerability that allows high-privilege users to inject malicious scripts. An attacker with admin or equivalent access can craft a malicious input that executes in other users' browsers when they interact with the cookie bar. The vulnerability requires user interaction and affects the integrity and confidentiality of site data.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers when they view the cookie bar.

Potential impact on your site

04Site Impact

A compromised admin account can inject scripts affecting all site visitors, potentially stealing data or redirecting users.

Conditions required to exploit

05Prerequisites

Attacker must have high-level admin access to the site and the victim must view the affected page.

Key dates

06Disclosure timeline

December 14, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-49836 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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