CVE WatchJul 23, 2026

CVE-2026-8900

The Simple SEO Slideshow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, a

CVSS

6.4

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Jun 6, 2026 · Last modified: Jul 23, 2026 · CWE-79

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-07-122026-08-08

Technical description

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.

Official references

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