CVE-2023-30777

MEDIUM 6.1CVE-2023-30777 · Published 10/05/2023 · updated 17/06/2026

In short

CVE-2023-30777 is a MEDIUM (CVSS 6.1) vulnerability affecting advanced custom fields (advancedcustomfields).
Chance of exploitation in the next 30 days (EPSS): 39.0%, higher than 98.6% of all vulnerabilities.
Fix: update to 6.1.6 or later.

Package	Affected versions	Patched versions
advanced custom fields advancedcustomfields	`< 6.1.6`	`6.1.6`

Description

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

References

patchstack.com/articles/reflected-xss-in-advanced-custom-fields-plugins-affecting-2-million-sites · Exploit
patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability · Third Party Advisory
patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability · Third Party Advisory

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Package

Affected versions

Patched versions

advanced custom fields

advancedcustomfields

< 6.1.6

6.1.6

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