Description
The Custom Block Builder WordPress plugin before 3.8.3 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Custom Block Builder | < 3.8.3 | 3.8.3 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Lazy Blocks <= 3.8.2 - Cross-Site Scripting http/cves/2024/CVE-2024-12878.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
References
- https://wpscan.com/vulnerability/827444d1-87cb-4057-827a-d802eac82cf8/ exploit vdb-entry technical-description