Cross-site scripting vulnerability exists in Advanced Custom Fields versions 6.3.5 and earlier and Advanced Custom Fields Pro versions 6.3.5 and earlier. If an attacker with the 'capability' setting privilege which is set in the product settings stores an arbitrary script in the field label, the script may be executed on the web browser of the logged-in user with the same privilege as the attacker's.
Conclusion & alert: CVE-2024-45429 is rated Low Risk (35.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.40%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.54% | 0.40% | -0.14% |
| 2 | 2026-01-24 | 0.39% | 0.54% | +0.15% |
| 3 | 2025-11-21 | — | 0.39% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| wpengine | advanced_custom_fields | <= 6.3.5 | cpe:2.3:a:wpengine:advanced_custom_fields:*:*:*:*:*:wordpress:*:* |
| wpengine | advanced_custom_fields | <= 6.3.5 | cpe:2.3:a:wpengine:advanced_custom_fields:*:*:*:*:pro:wordpress:*:* |
| URL | Tags |
|---|---|
| https://jvn.jp/en/jp/JVN67963942/ | Third Party Advisory |
| https://wordpress.org/plugins/advanced-custom-fields/ | Product |
| https://www.advancedcustomfields.com/ | Product |
| https://www.advancedcustomfields.com/blog/acf-6-3-6/ | Release Notes |