CVE-2026-8981 — Lazy Blocks < 4.3.0 - Admin+ Stored XSS via Custom Block Frontend HTML
The Custom Block Builder WordPress plugin before 4.3.0 does not consistently check the unfiltered_html capability across all paths that write to its block template code fields,…
Published: 2026-06-09 · CVSS: 3.5 · CVSS 3.1
The Custom Block Builder WordPress plugin before 4.3.0 does not consistently check the unfiltered_html capability across all paths that write to its block template code fields, allowing administrators on multisite installations (or single-site installs with DISALLOW_UNFILTERED_HTML defined) to inject arbitrary JavaScript that executes for any visitor of pages embedding the affected block.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7