CVE-2024-34553 in Stockholm Core Plugin
Summary
by MITRE • 05/08/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Select-Themes Stockholm Core allows Reflected XSS.This issue affects Stockholm Core: from n/a through 2.4.1.
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Analysis
by VulDB Data Team • 03/31/2025
The vulnerability identified as CVE-2024-34553 represents a critical cross-site scripting flaw within the Select-Themes Stockholm Core framework, specifically categorized under CWE-79 Improper Neutralization of Input During Web Page Generation. This reflected cross-site scripting vulnerability arises from insufficient input validation and sanitization mechanisms during the web page generation process, creating an exploitable vector that allows malicious actors to inject and execute arbitrary script code within the context of affected user browsers. The vulnerability impacts all versions of Stockholm Core from the initial release through version 2.4.1, indicating a prolonged exposure window that significantly increases the attack surface and potential impact across various implementations.
The technical exploitation of this vulnerability occurs when user-supplied input is directly incorporated into dynamically generated web pages without proper sanitization or encoding measures. Attackers can craft malicious payloads that, when executed in a victim's browser, can steal session cookies, perform unauthorized actions on behalf of users, or redirect them to malicious sites. The reflected nature of this XSS vulnerability means that the malicious script is reflected off the web server rather than being stored, making it particularly challenging to detect and prevent through traditional security measures. This type of vulnerability commonly manifests when parameters passed through HTTP requests are not properly escaped or validated before being rendered in HTML output.
The operational impact of CVE-2024-34553 extends beyond simple script execution, as it can enable sophisticated attack vectors including session hijacking, credential theft, and data exfiltration from authenticated user sessions. When exploited successfully, this vulnerability can compromise the integrity and confidentiality of user data, potentially leading to full account takeovers and unauthorized access to sensitive information. The affected Stockholm Core framework likely processes various input parameters including URL parameters, form data, or API inputs that are subsequently rendered in web pages, creating multiple potential attack vectors. Organizations utilizing this framework may experience significant security degradation, particularly in environments where users have elevated privileges or access to sensitive data.
Mitigation strategies for CVE-2024-34553 should prioritize immediate implementation of input validation and output encoding mechanisms across all user-supplied data processing pathways. Security measures must include comprehensive parameter validation, proper HTML encoding of dynamic content, and implementation of Content Security Policies to prevent unauthorized script execution. Organizations should upgrade to patched versions of Stockholm Core as soon as available, while implementing additional defensive measures such as web application firewalls and runtime application self-protection mechanisms. The vulnerability aligns with ATT&CK technique T1531 Access Token Manipulation and T1203 Exploitation for Client Execution, highlighting the potential for privilege escalation and persistent access through successful exploitation of this reflected XSS vulnerability. Regular security assessments and input sanitization testing should be implemented to prevent similar vulnerabilities from emerging in related components and ensure comprehensive protection against cross-site scripting attacks.