Is Klaviyo Secure?
D
Grade D — Poor
High RiskKlaviyo receives a Grade D from WP HealthKit's 46-layer security audit, with 181 findings including 3 critical vulnerabilities.
Grade
D
Findings
181
Critical
3
Standards
100/100
Active Installs
N/A
Last Audited
Today
What We Found
REST endpoint open to all visitors (permission_callback returns true)CRITICAL
REST endpoint open to all visitors (permission_callback returns true)CRITICAL
REST endpoint open to all visitors (permission_callback returns true)CRITICAL
Version mismatch: declares WP 5.2+ but uses WP 5.8+ functionsHIGH
41 unprefixed global functions detectedHIGH
+ 176 more findings in the full report.
Frequently Asked Questions
Is Klaviyo safe to use?
Klaviyo receives a Grade D from WP HealthKit's 46-layer security audit, with 181 findings including 3 critical vulnerabilities.
How many vulnerabilities does Klaviyo have?
WP HealthKit's audit found 181 findings for Klaviyo: 3 critical, 36 high, and 94 medium severity issues.
What is Klaviyo's security grade?
Klaviyo has an overall security grade of D (Poor) based on WP HealthKit's 46-layer security audit.