CVE-2024-6639: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in AxtonYao MDx
The MDx theme for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mdx_list_item' shortcode in all versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AI Analysis
Technical Summary
CVE-2024-6639 is a stored cross-site scripting vulnerability in the MDx WordPress theme (up to version 2.0.3) caused by improper neutralization of input in the 'mdx_list_item' shortcode. Authenticated users with contributor or higher privileges can inject arbitrary scripts due to insufficient input sanitization and output escaping. This vulnerability allows script execution in the context of users who visit the compromised pages, potentially leading to information disclosure or session hijacking. The CVSS 3.1 base score is 6.4 (medium), reflecting network attack vector, low attack complexity, and privileges required.
Potential Impact
An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the infected pages, potentially leading to unauthorized actions or data exposure within the affected WordPress site. There is no indication of impact on availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the MDx theme if possible. Monitor official channels for updates or patches from AxtonYao.
CVE-2024-6639: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in AxtonYao MDx
Description
The MDx theme for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mdx_list_item' shortcode in all versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-6639 is a stored cross-site scripting vulnerability in the MDx WordPress theme (up to version 2.0.3) caused by improper neutralization of input in the 'mdx_list_item' shortcode. Authenticated users with contributor or higher privileges can inject arbitrary scripts due to insufficient input sanitization and output escaping. This vulnerability allows script execution in the context of users who visit the compromised pages, potentially leading to information disclosure or session hijacking. The CVSS 3.1 base score is 6.4 (medium), reflecting network attack vector, low attack complexity, and privileges required.
Potential Impact
An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the infected pages, potentially leading to unauthorized actions or data exposure within the affected WordPress site. There is no indication of impact on availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the MDx theme if possible. Monitor official channels for updates or patches from AxtonYao.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-07-10T00:13:07.180Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6c0ab7ef31ef0b55f41d
Added to database: 2/25/2026, 9:39:22 PM
Last enriched: 4/9/2026, 8:20:31 PM
Last updated: 4/12/2026, 12:22:38 PM
Views: 8
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