CVE-2026-8869: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mutualfunddata Mutual Funds Data
The Mutual Funds Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute in versions up to, and including, 1.2.1. This is due to insufficient input sanitization and output escaping on the user supplied 'title' attribute in the mfd_shortcode() function, which is concatenated directly into the HTML output within a <caption> element. 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-2026-8869 is a stored cross-site scripting vulnerability in the Mutual Funds Data WordPress plugin affecting versions up to 1.2.1. The issue arises from improper neutralization of user input in the 'title' shortcode attribute, which is concatenated directly into HTML output without sufficient sanitization or escaping. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code into pages, potentially impacting other users who view those pages. The vulnerability is identified as CWE-79 and 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). No patch or official fix has been documented, and the plugin is not a cloud service.
Potential Impact
An attacker with Contributor-level or higher access can store malicious scripts in the 'title' shortcode attribute, leading to persistent cross-site scripting. This can result in limited confidentiality and integrity impacts, such as theft of user session data or manipulation of page content for users who view the injected pages. There is no impact on availability. The vulnerability affects the confidentiality and integrity of users interacting with the affected WordPress site.
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 Mutual Funds Data plugin if possible. Monitor for updates from the vendor regarding patches or mitigations.
CVE-2026-8869: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mutualfunddata Mutual Funds Data
Description
The Mutual Funds Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute in versions up to, and including, 1.2.1. This is due to insufficient input sanitization and output escaping on the user supplied 'title' attribute in the mfd_shortcode() function, which is concatenated directly into the HTML output within a <caption> element. 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.
CVSS v3.1
Score 6.4medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8869 is a stored cross-site scripting vulnerability in the Mutual Funds Data WordPress plugin affecting versions up to 1.2.1. The issue arises from improper neutralization of user input in the 'title' shortcode attribute, which is concatenated directly into HTML output without sufficient sanitization or escaping. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code into pages, potentially impacting other users who view those pages. The vulnerability is identified as CWE-79 and 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). No patch or official fix has been documented, and the plugin is not a cloud service.
Potential Impact
An attacker with Contributor-level or higher access can store malicious scripts in the 'title' shortcode attribute, leading to persistent cross-site scripting. This can result in limited confidentiality and integrity impacts, such as theft of user session data or manipulation of page content for users who view the injected pages. There is no impact on availability. The vulnerability affects the confidentiality and integrity of users interacting with the affected WordPress site.
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 Mutual Funds Data plugin if possible. Monitor for updates from the vendor regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-05-18T20:19:53.418Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a169063e29bf47b509e1780
Added to database: 5/27/2026, 6:34:11 AM
Last enriched: 5/27/2026, 7:03:26 AM
Last updated: 5/29/2026, 2:24:46 PM
Views: 10
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