CVE-2026-1275
Received Received - Intake
Stored XSS in Multi Post Carousel Plugin via 'slides' Shortcode

Publication date: 2026-03-21

Last updated on: 2026-03-21

Assigner: Wordfence

Description
The Multi Post Carousel by Category plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slides' shortcode attribute in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on the user-supplied 'slides' parameter in the post_slides_shortcode function. 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.
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Meta Information
Published
2026-03-21
Last Modified
2026-03-21
Generated
2026-06-16
AI Q&A
2026-03-21
EPSS Evaluated
2026-06-15
NVD
CVE-2026-1275
EUVD
EUVD-2026-14171
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordfence multi_post_carousel to 1.4 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The Multi Post Carousel by Category plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the 'slides' shortcode attribute in all versions up to and including 1.4.

This vulnerability arises because the plugin does not properly sanitize or escape user input supplied through the 'slides' parameter in the post_slides_shortcode function.

As a result, authenticated attackers with Contributor-level access or higher can inject arbitrary web scripts into pages. These scripts execute whenever any user accesses the affected page, potentially compromising user security.

Impact Analysis

This vulnerability allows attackers with Contributor-level access or above to inject malicious scripts into pages via the 'slides' shortcode attribute.

When other users visit these pages, the injected scripts execute in their browsers, which can lead to theft of session cookies, defacement, redirection to malicious sites, or other malicious actions.

Because the vulnerability is a Stored Cross-Site Scripting issue, the malicious code persists on the site and affects all users who view the compromised content.

The CVSS base score of 6.4 indicates a medium severity impact with low attack complexity but requiring privileges.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability exists in all versions of the Multi Post Carousel by Category WordPress plugin up to and including version 1.4. It is caused by insufficient input sanitization and output escaping of the 'slides' shortcode attribute, allowing authenticated users with Contributor-level access or higher to inject stored cross-site scripting payloads.

Immediate mitigation steps include:

  • Update the Multi Post Carousel plugin to a version that patches this vulnerability once available.
  • Restrict Contributor-level and higher user permissions if possible until the plugin is updated.
  • Audit and sanitize any user input that uses the 'slides' shortcode attribute in posts or pages.
  • Consider disabling or removing the Multi Post Carousel plugin temporarily if updating is not immediately possible.
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