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CVE-2026-81283: WordPress WP User Frontend plugin <= 4.3.10 - PHP Object Injection vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-02
• Weakness: CWE-502

Description

Subscriber PHP Object Injection in WP User Frontend <= 4.3.10 versions.

Affected products

• weDevs WP User Frontend: through 4.3.10

References

• https://patchstack.com/database/wordpress/plugin/wp-user-frontend/vulnerability/wordpress-wp-user-frontend-plugin-4-3-10-php-object-injection-vulnerability?_s_id=cve

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