CVE-2024-0689: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mgibbs189 Custom Field Suite
The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a meta import in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output escaping on the meta values. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI Analysis
Technical Summary
CVE-2024-0689 is a stored cross-site scripting vulnerability in the Custom Field Suite plugin for WordPress, present in all versions up to and including 2.6.4. The issue is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of meta values during meta import. This vulnerability affects multi-site WordPress installations or installations where the unfiltered_html capability is disabled. An attacker with administrator-level privileges can inject malicious scripts that execute in the context of users viewing the injected pages.
Potential Impact
Successful exploitation allows an authenticated administrator-level user to inject arbitrary web scripts that execute in the browsers of users who access the injected pages. This can lead to limited confidentiality and integrity impacts such as session hijacking or content manipulation. The CVSS 3.1 base score is 4.4 (medium severity), reflecting the requirement for high privileges and the limited scope of impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, affected users should restrict administrator access to trusted personnel only and consider disabling multi-site functionality or enabling unfiltered_html capability if feasible. Monitoring vendor channels for updates is recommended.
CVE-2024-0689: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mgibbs189 Custom Field Suite
Description
The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a meta import in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output escaping on the meta values. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-0689 is a stored cross-site scripting vulnerability in the Custom Field Suite plugin for WordPress, present in all versions up to and including 2.6.4. The issue is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of meta values during meta import. This vulnerability affects multi-site WordPress installations or installations where the unfiltered_html capability is disabled. An attacker with administrator-level privileges can inject malicious scripts that execute in the context of users viewing the injected pages.
Potential Impact
Successful exploitation allows an authenticated administrator-level user to inject arbitrary web scripts that execute in the browsers of users who access the injected pages. This can lead to limited confidentiality and integrity impacts such as session hijacking or content manipulation. The CVSS 3.1 base score is 4.4 (medium severity), reflecting the requirement for high privileges and the limited scope of impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, affected users should restrict administrator access to trusted personnel only and consider disabling multi-site functionality or enabling unfiltered_html capability if feasible. Monitoring vendor channels for updates is recommended.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-01-18T15:39:14.689Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6de3b7ef31ef0b59030a
Added to database: 2/25/2026, 9:47:15 PM
Last enriched: 4/9/2026, 5:39:15 AM
Last updated: 4/12/2026, 3:47:37 PM
Views: 17
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