What’s Vulnerable › Vulnerabilities

CVE-2018-20986

• Severity: medium (CVSS 5.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The advanced-custom-fields (aka Elliot Condon Advanced Custom Fields) plugin before 5.7.8 for WordPress has XSS by authors.

Affected products

• WP Engine Advanced Custom Fields: before 5.7.8 — fixed in 5.7.8

How to fix

Upgrade to a fixed version: WP Engine Advanced Custom Fields 5.7.8. Check the vendor advisory for mitigations.

References

• https://wordpress.org/plugins/advanced-custom-fields/#developers
• https://www.advancedcustomfields.com/blog/acf-5-7-8-release/
• https://www.advancedcustomfields.com/changelog/
• https://www2.deloitte.com/de/de/pages/risk/articles/wordpress-plugin-xss.html
• https://wordpress.org/plugins/advanced-custom-fields/#developers
• https://www.advancedcustomfields.com/blog/acf-5-7-8-release/
• https://www.advancedcustomfields.com/changelog/
• https://www2.deloitte.com/de/de/pages/risk/articles/wordpress-plugin-xss.html

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