The Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'delay' Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ml-slider custom post type is registered without custom capability restrictions and the ml-slider_settings meta key is unprotected, allowing Author-level users to set the malicious delay value via XML-RPC custom_fields when creating an ml-slider post.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
metaslider Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider unaffected
Version Status Constraints
0 affected ≤ 3.111.0

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.class.php#L54 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.class.php#L660 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.flex.class.php#L346 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/ml-slider.php#L449 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/ml-slider.php#L604 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.class.php#L54 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.class.php#L660 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.flex.class.php#L346 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/ml-slider.php#L449 cve-icon
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/ml-slider.php#L604 cve-icon
https://plugins.trac.wordpress.org/changeset/3633208/ml-slider/trunk/inc/slider/metaslider.class.php cve-icon
https://plugins.trac.wordpress.org/changeset?old_path=%2Fml-slider/tags/3.111.0&new_path=%2Fml-slider/tags/3.111.1 cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/3f0082c6-c040-4244-be7b-b133fd24d093?source=cve cve-icon
History

Thu, 06 Aug 2026 06:30:00 +0000

Type Values Removed Values Added
Description The Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'delay' Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ml-slider custom post type is registered without custom capability restrictions and the ml-slider_settings meta key is unprotected, allowing Author-level users to set the malicious delay value via XML-RPC custom_fields when creating an ml-slider post.
Title Slider, Gallery, and Carousel by MetaSlider <= 3.111.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'delay' Post Meta Setting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-06T05:29:25.100Z

Reserved: 2026-07-30T15:17:26.774Z

Link: CVE-2026-18400

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-06T08:00:03Z

Weaknesses