CVE-2026-57833 HIGH

CVE-2026-57833: Joomla Extension - weeblr.com - Unauthenticated stored XSS in 4Analytics < 5.0.2

Vendor Weeblr.com

Product 4Analytics extension for Joomla

Weakness CWE-79 · XSS

Published July 15, 2026

Last update July 15, 2026

View on NVD All CVEs

CVSS base score

8.6/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction —

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

The Joomla extension 4Analytics is vulnerable to an unauthenticated stored XSS in relation to the AI analysis feature.

Explanation of Vulnerability in Simple Terms

02Summary

The 4Analytics extension for Joomla contains a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the application. An attacker can craft a malicious link or page that, when visited by a site administrator or user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in users' browsers to steal sessions, credentials, or perform unauthorized actions.

Potential impact on your site

04Site Impact

Administrators and users visiting crafted links risk session hijacking, data theft, and unauthorized site modifications.

Conditions required to exploit

05Prerequisites

Attacker must trick a user into visiting a malicious link or page (user interaction required). No authentication needed.

Key dates

06Disclosure timeline

July 15, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-57833 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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