CVE-2024-6256: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in smub Feeds for YouTube (YouTube video, channel, and gallery plugin)
The Feeds for YouTube (YouTube video, channel, and gallery plugin) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'youtube-feed' shortcode in all versions up to, and including, 2.2.1 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
The Feeds for YouTube WordPress plugin (up to version 2.2.1) is vulnerable to stored cross-site scripting (CWE-79) due to improper neutralization of input in the 'youtube-feed' shortcode. Authenticated attackers with at least contributor privileges can inject arbitrary web scripts that execute in the context of users visiting the injected pages. This vulnerability stems from inadequate input sanitization and output escaping of user-supplied shortcode attributes, allowing persistent script injection.
Potential Impact
An attacker with contributor-level access or higher can inject malicious scripts into pages using the vulnerable shortcode, potentially leading to session hijacking, defacement, or other script-based attacks against users viewing those pages. The vulnerability does not allow privilege escalation or denial of service but can compromise user interactions with the affected site. The CVSS 3.1 base score of 6.4 reflects a medium impact on confidentiality and integrity with no impact on availability.
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 Feeds for YouTube plugin if possible. Monitor official channels for updates and apply patches promptly once released.
CVE-2024-6256: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in smub Feeds for YouTube (YouTube video, channel, and gallery plugin)
Description
The Feeds for YouTube (YouTube video, channel, and gallery plugin) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'youtube-feed' shortcode in all versions up to, and including, 2.2.1 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
The Feeds for YouTube WordPress plugin (up to version 2.2.1) is vulnerable to stored cross-site scripting (CWE-79) due to improper neutralization of input in the 'youtube-feed' shortcode. Authenticated attackers with at least contributor privileges can inject arbitrary web scripts that execute in the context of users visiting the injected pages. This vulnerability stems from inadequate input sanitization and output escaping of user-supplied shortcode attributes, allowing persistent script injection.
Potential Impact
An attacker with contributor-level access or higher can inject malicious scripts into pages using the vulnerable shortcode, potentially leading to session hijacking, defacement, or other script-based attacks against users viewing those pages. The vulnerability does not allow privilege escalation or denial of service but can compromise user interactions with the affected site. The CVSS 3.1 base score of 6.4 reflects a medium impact on confidentiality and integrity with no impact on availability.
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 Feeds for YouTube plugin if possible. Monitor official channels for updates and apply patches promptly once released.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-06-21T20:08:31.465Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6bfeb7ef31ef0b55d688
Added to database: 2/25/2026, 9:39:10 PM
Last enriched: 4/9/2026, 8:17:33 PM
Last updated: 4/12/2026, 3:01:19 PM
Views: 7
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