PT-2026-47072 · Spyrosvl · Simple Seo Slideshow

Published 2026-06-05 · Updated 2026-06-06 · CVE-2026-8900

NVD

CVSS v3.1

6.4

Medium

Base vector

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

The Simple SEO Slideshow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 1.2.8 due to insufficient input sanitization and output escaping. 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. WordPress KSES does not strip malicious shortcode attribute values on post save, allowing contributor-level users to persist payloads that execute for any visitor, including administrators reviewing the post.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8900

Affected Products

Simple Seo Slideshow

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-8900 · Security Note
• https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L235 · Note
• https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L356 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/3b3bb703-fdff-4525-9272-7a3db58b81a0?source=cve · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3551425%40simple-seo-slideshow&new=3551425%40simple-seo-slideshow&sfp_email=&sfph_mail= · Note
• https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L334 · Note