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CVE-2026-59544— WordPress Thrive Quiz Builder plugin <= 10.9.3.0 - PHP Object Injection vulnerability

Quick assessment

Affected
Thrive Themes Coupon Thrive Quiz Builder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Thrive Themes Thrive Quiz Builder是Thrive Themes公司的一个web插件。 Thrive Themes Thrive Quiz Builder 10.9.3.0及之前版本存在反序列化注入漏洞，该漏洞源于PHP对象注入，可能导致未经身份验证的攻击者执行恶意操作。

CVSS 9.8 · Critical EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Thrive Themes Coupon Thrive Quiz Builder n/a≤ 10.9.3.0 affected
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I. Basic Information for CVE-2026-59544

Vulnerability Information
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Vulnerability Title
WordPress Thrive Quiz Builder plugin <= 10.9.3.0 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Thrive Quiz Builder <= 10.9.3.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Thrive Themes Thrive Quiz Builder 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Thrive Themes Thrive Quiz Builder是Thrive Themes公司的一个web插件。 Thrive Themes Thrive Quiz Builder 10.9.3.0及之前版本存在反序列化注入漏洞，该漏洞源于PHP对象注入，可能导致未经身份验证的攻击者执行恶意操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Thrive Themes Coupon Thrive Quiz Builder n/a ~ 10.9.3.0 -

II. Public POCs for CVE-2026-59544

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-59544

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IV. Related Vulnerabilities

Same vendor: Thrive Themes Coupon
Same weakness: CWE-502

V. Comments for CVE-2026-59544

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