XSS in Esiteq Responsive Video Embedder
CVE-2026-8877
The Responsive Video Embedder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rem_video' shortcode in versions up to, and including, 0.1. This is due to insufficient input sanitization and output escaping on user…
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
- Esiteq Responsive Video Embedder — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-8877?
- CVE-2026-8877 is a medium-severity vulnerability in Esiteq Responsive Video Embedder, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-27.
- How severe is CVE-2026-8877?
- Medium severity. CVSS v3 base score is 6.4 out of 10.