XSS in Celloexpressions Content Slideshow
CVE-2026-8873
The Content Slideshow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 2.4.1 due to insufficient input sanitization and output escaping. This makes it possible…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (9.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Celloexpressions Content Slideshow — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-8873?
- CVE-2026-8873 is a medium-severity vulnerability in Celloexpressions Content Slideshow, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-27.
- How severe is CVE-2026-8873?
- Medium severity. CVSS v3 base score is 6.4 out of 10.