CVE-2026-8866 MEDIUM

CVE-2026-8866: jQuery googleslides <= 1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

Vendor Bradyholt
Product jQuery googleslides
Weakness CWE-79 · XSS
Published May 27, 2026
Last update May 27, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The jQuery googleslides plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'googleslides' shortcode in all versions up to, and including, 1.3. This is due to insufficient input sanitization and output escaping on user supplied attributes (userid, albumid, authkey, imgmax, maxresults, random, caption, albumlink, time, and fadespeed) in the googleslides_handler() function, which interpolates the attribute values directly into single-quoted HTML attributes without using esc_attr(). 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.

Explanation of Vulnerability in Simple Terms

02Summary

jQuery googleslides versions 1.3 and earlier contain a cross-site scripting vulnerability. An attacker with low-level site access can inject malicious scripts that execute in other users' browsers, potentially affecting the entire site. The vulnerability requires network access but no user interaction from the victim.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers and affects the entire site.

Potential impact on your site

04Site Impact

Users' sessions and data could be compromised; site functionality may be altered or defaced for all visitors.

Conditions required to exploit

05Prerequisites

Attacker needs low-level site access (e.g., contributor or subscriber role); no victim interaction required.

Key dates

06Disclosure timeline

May 27, 2026 CVE published
May 27, 2026 Record updated