XSS in Sproutient Zypento Blocks
CVE-2026-5820
The Zypento Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Table of Contents block in all versions up to, and including, 1.0.6. This is due to the front-end TOC rendering script reading heading text via `i…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (1.9th 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
- Sproutient Zypento Blocks — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-5820?
- CVE-2026-5820 is a medium-severity vulnerability in Sproutient Zypento Blocks, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-22.
- How severe is CVE-2026-5820?
- Medium severity. CVSS v3 base score is 6.4 out of 10.