CVE-2026-16260: CWE-79 Cross-Site Scripting (XSS) in Post Grid, Slider & Carousel Ultimate
Description
A Cross-Site Scripting (XSS) vulnerability exists in the Post Grid, Slider & Carousel Ultimate WordPress plugin before version 1.8.1. This flaw allows users with Contributor role or higher to inject JavaScript code via a custom post type setting that is not properly sanitized or escaped. The malicious script executes in the context of any administrator who views the affected item on the admin edit screen.
CVSS v3.1
Score 6.8medium
Affected software
Post Grid, Slider & Carousel Ultimate
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16260 is a CWE-79 Cross-Site Scripting vulnerability in the Post Grid, Slider & Carousel Ultimate WordPress plugin versions prior to 1.8.1. The plugin fails to sanitize and escape one of its custom post type settings before outputting it within an HTML attribute on the admin edit screen. This allows users with Contributor or higher privileges to inject JavaScript code that executes in the administrator's session when the affected post is opened.
Potential Impact
An attacker with Contributor or higher privileges can inject malicious JavaScript that executes in the context of an administrator's session. This can lead to full compromise of the administrator account, including theft of credentials, session hijacking, or other administrative actions. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector.
Mitigation Recommendations
Upgrade the Post Grid, Slider & Carousel Ultimate plugin to version 1.8.1 or later where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory. Since the plugin is self-hosted, administrators should apply the update promptly to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-20T08:30:12.390Z
- State
- PUBLISHED
Threat ID: 6a893cc5acd9273b49a6fe98
Added to database: 08/22/2026, 06:08:05 UTC
Last enriched: 09/11/2026, 02:17:59 UTC
Last updated: 10/06/2026, 18:48:19 UTC
Views: 39
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