CVE-2024-12439: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in lumiblog Marketplace Items
The Marketplace Items plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'marketplace' shortcode in all versions up to, and including, 1.5.5 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-2024-12439 is a stored cross-site scripting vulnerability in the lumiblog Marketplace Items WordPress plugin affecting all versions up to 1.5.5. The issue is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of user-supplied attributes in the 'marketplace' shortcode. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts that execute in the context of other users viewing the injected pages. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, requiring privileges, no user interaction, scope change, and limited confidentiality and integrity impact without availability impact.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the affected pages, potentially leading to limited confidentiality and integrity impacts such as session hijacking or content manipulation. There is no impact on availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Marketplace Items plugin if possible to mitigate risk.
CVE-2024-12439: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in lumiblog Marketplace Items
Description
The Marketplace Items plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'marketplace' shortcode in all versions up to, and including, 1.5.5 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-2024-12439 is a stored cross-site scripting vulnerability in the lumiblog Marketplace Items WordPress plugin affecting all versions up to 1.5.5. The issue is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of user-supplied attributes in the 'marketplace' shortcode. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts that execute in the context of other users viewing the injected pages. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, requiring privileges, no user interaction, scope change, and limited confidentiality and integrity impact without availability impact.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the affected pages, potentially leading to limited confidentiality and integrity impacts such as session hijacking or content manipulation. There is no impact on availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Marketplace Items plugin if possible to mitigate risk.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-12-10T18:37:13.890Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6e3bb7ef31ef0b598a66
Added to database: 2/25/2026, 9:48:43 PM
Last enriched: 4/9/2026, 12:45:16 PM
Last updated: 4/12/2026, 7:37:30 AM
Views: 24
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