CVEvulnerability
CVE-2026-8900
6.4 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-06-06
- Last modified
- 2026-07-23
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
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.
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L235 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L334 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/simple-seo-slideshow/trunk/simpleslideshow.php#L356 plugins.trac.wordpress.org
- 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= plugins.trac.wordpress.org
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3b3bb703-fdff-4525-9272-7a3db58b81a0?source=cve www.wordfence.com