Inadequate Content Filtering Leads to XSS Vulnerabilities
CVE-2024-21726

Currently unrated

Key Information:

Vendor: Joomla
Status: Joomla! Cms
Vendor: CVE Published:; 29 February 2024

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What is CVE-2024-21726?

CVE-2024-21726 is a vulnerability identified in Joomla, a widely used open-source content management system (CMS) designed for building and managing websites. This vulnerability arises from inadequate content filtering within various components of Joomla, leading to Cross-Site Scripting (XSS) vulnerabilities. If exploited, this could allow attackers to inject malicious scripts into web pages viewed by other users, potentially compromising user data and undermining the integrity of the affected websites. Organizations using Joomla may face severe repercussions related to data security and user trust due to this flaw.

Technical Details

The vulnerability stems from deficiencies in the content filtering mechanisms utilized by Joomla's core and certain extensions. These inadequacies enable attackers to manipulate how content is processed and displayed, thereby facilitating the insertion of untrusted scripts. This is particularly critical as such XSS vulnerabilities can be exploited without requiring authentication, allowing attackers to target unauthenticated users. The issues arise in various components of the Joomla platform, making it imperative for users to be aware of their configurations and any third-party integrations they may be using.

Impact of the Vulnerability

Data Compromise: Attackers could potentially access sensitive information stored in user sessions or manipulate web page contents, leading to unauthorized data exposure or theft.
User Trust Erosion: Successful exploitation of this vulnerability can result in a damaged reputation for organizations, as users may lose confidence in the security and integrity of the platform.
Malware Distribution Potential: By executing malicious scripts, attackers can redirect users to malicious sites, or perform phishing attacks, thereby spreading malware or engaging in further cybercriminal activities.