CVE-2026-59544

WordPress Thrive Quiz Builder plugin <= 10.9.3.0 - PHP Object Injection vulnerability

Published Jul 23, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Unauthenticated PHP Object Injection in Thrive Quiz Builder <= 10.9.3.0 versions.

Remediation

Vendor Solution

Update the WordPress Thrive Quiz Builder Plugin to the latest available version (at least 10.9.3.1).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Thrivethemes
Thrivethemes thrive Quiz Builder
Wordpress
Wordpress wordpress
Vendors & Products Thrivethemes
Thrivethemes thrive Quiz Builder
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Unauthenticated PHP Object Injection in Thrive Quiz Builder <= 10.9.3.0 versions.
Title WordPress Thrive Quiz Builder plugin <= 10.9.3.0 - PHP Object Injection vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Jul 23, 2026, 1:31 PM
Reserved
Jul 5, 2026, 9:27 PM
Status
Deferred
Published
Jul 23, 2026, 12:18 PM
Modified
Oct 24, 2026, 1:10 PM