CVE-2023-30777

6.1 mediumEPSS 39%

Medium (6.1) in advancedcustomfields advanced custom fields. EPSS 39% chance of exploitation in the next 30 days.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 39% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2023-05-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

advancedcustomfields:advanced_custom_fields

References

https://patchstack.com/articles/reflected-xss-in-advanced-custom-fields-plugins-affecting-2-million-sites?_s_id=cve
https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
https://patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
https://patchstack.com/articles/reflected-xss-in-advanced-custom-fields-plugins-affecting-2-million-sites?_s_id=cve
https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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