CVE-2024-56209 HIGH

CVE-2024-56209: WordPress Kleo theme < 5.4.4 - Reflected Cross Site Scripting (XSS) vulnerability

Vendor Seventhqueen

Product Kleo

Weakness CWE-79 · XSS

Published December 31, 2024

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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 SeventhQueen Kleo kleo allows Reflected XSS.This issue affects Kleo: from n/a through < 5.4.4.

Explanation of Vulnerability in Simple Terms

02Summary

Kleo versions up to 5.4.4 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages. The vulnerability requires user interaction—typically clicking a malicious link—and can affect multiple users across the site. An attacker can steal session cookies, redirect users, or deface content visible to other visitors.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers when they visit affected pages.

Potential impact on your site

04Site Impact

Visitors and admins can be redirected to phishing sites, have sessions hijacked, or see defaced content depending on the injected payload.

Conditions required to exploit

05Prerequisites

No authentication required. Victim must click a malicious link or visit an attacker-controlled page that triggers the vulnerability.

Key dates

06Disclosure timeline

December 31, 2024 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2024-56209 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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