CVE-2024-29470 in OneBlog
Summary
by MITRE • 03/20/2024
OneBlog v2.3.4 was discovered to contain a stored cross-site scripting (XSS) vulnerability via the component {{rootpath}}/links.
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Analysis
by VulDB Data Team • 04/13/2025
The vulnerability identified as CVE-2024-29470 affects OneBlog version 2.3.4 and represents a critical stored cross-site scripting flaw that resides within the links component of the application. This type of vulnerability allows attackers to inject malicious scripts into web pages that are then executed by other users who view those pages. The specific component impacted is located at {{rootpath}}/links, indicating that the vulnerability exists in how the application processes and displays link-related data. Stored XSS vulnerabilities are particularly dangerous because the malicious code is permanently stored on the server and executed every time a user accesses the affected page, making the attack persistent and potentially widespread.
The technical nature of this flaw stems from inadequate input validation and output encoding within the links handling functionality. When users submit or interact with links through the application interface, the system fails to properly sanitize or escape user-supplied data before rendering it in the browser context. This creates an opportunity for attackers to inject malicious JavaScript code that can execute within the victim's browser session. The vulnerability operates under CWE-79 which classifies cross-site scripting as a weakness in input validation and output encoding. According to ATT&CK framework, this vulnerability maps to T1566.001 which describes social engineering through malicious links, and T1059.007 which covers scripting through web shells or malicious scripts.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking. An attacker could leverage this stored XSS to perform actions on behalf of authenticated users, potentially leading to complete account compromise, data exfiltration, or even privilege escalation within the application. The persistent nature of stored XSS means that once the malicious payload is injected, it will affect all users who access the affected links component, creating a broad attack surface. Additionally, the vulnerability could be exploited to redirect users to malicious sites, harvest cookies, or inject additional malicious payloads that could compromise the entire user base. The impact is particularly severe in blog environments where users may trust content from the application, making the attack vectors more effective.
Mitigation strategies for CVE-2024-29470 should focus on immediate input sanitization and output encoding improvements within the links component. The application should implement strict validation of all user-supplied data before storage, using allowlists of permitted characters and patterns rather than denylists. Output encoding should be applied consistently whenever user data is rendered in web pages to prevent script execution. The system should also implement Content Security Policy headers to limit script execution capabilities and provide additional defense-in-depth. Regular security audits should be conducted to identify similar vulnerabilities in other components, and the application should be updated to a patched version as soon as available. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, while user education about suspicious links and social engineering tactics remains crucial for overall security posture.