CVE-2024-1146 in Alma Blog
Summary
by MITRE • 03/19/2024
Cross-Site Scripting vulnerability in Devklan's Alma Blog that affects versions 2.1.10 and earlier. This vulnerability could allow an attacker to store a malicious JavaScript payload within the application by adding the payload to 'Community Description' or 'Community Rules'.
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Analysis
by VulDB Data Team • 10/15/2025
This cross-site scripting vulnerability exists within Devklan's Alma Blog platform affecting versions 2.1.10 and earlier, representing a critical security flaw that undermines user data integrity and application security. The vulnerability stems from inadequate input validation and output sanitization mechanisms within the community management features of the blogging platform. Attackers can exploit this weakness by injecting malicious javascript code into the Community Description or Community Rules fields, which are then stored server-side and subsequently executed in the context of other users' browsers when they view these community pages. This type of vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, specifically manifesting as a stored cross-site scripting flaw that persists beyond the initial injection point.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it enables attackers to execute arbitrary code within users' browsers with the privileges of those users. This could result in unauthorized access to sensitive community data, account takeovers, data exfiltration, and potential lateral movement within affected networks. The vulnerability is particularly dangerous because it leverages legitimate application functionality rather than requiring complex exploitation techniques, making it accessible to attackers with varying skill levels. According to ATT&CK framework, this represents a T1059.007 technique involving script-based attacks and could facilitate subsequent stages such as T1566 - Phishing and T1133 - External Remote Services for establishing persistent access.
Organizations using affected versions of Alma Blog must immediately implement multiple layers of defense to mitigate this risk. The primary mitigation strategy involves implementing comprehensive input validation and output encoding for all user-supplied data, particularly within community management interfaces. This includes sanitizing all text fields that accept HTML content and implementing Content Security Policy headers to prevent unauthorized script execution. Additionally, the application should enforce strict character encoding and implement proper escaping mechanisms for all dynamic content rendered to users. Regular security updates and patch management procedures should be prioritized to ensure that all instances of the application remain current with the latest security fixes. Organizations should also conduct thorough security testing including dynamic application security testing and manual penetration testing to identify similar vulnerabilities within the application's codebase. The vulnerability demonstrates the critical importance of implementing defense-in-depth strategies and proper input validation across all application components that handle user-generated content.