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CVE-2026-65556— WordPress WPBruiser {no- Captcha anti-Spam} plugin <= 3.1.43 - PHP Object Injection vulnerability

Quick assessment

Affected
MihChe WPBruiser {no- Captcha anti-Spam}
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.

WordPress WPBruiser {no- Captcha anti-Spam}是WordPress基金会的一款无验证码的反垃圾评论插件。 WordPress WPBruiser {no- Captcha anti-Spam} 3.1.43及之前版本存在反序列化注入漏洞，该漏洞源于未经验证的PHP对象注入。

CVSS 9.8 · Critical EPSS 0.30% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
MihChe WPBruiser {no- Captcha anti-Spam} n/a≤ 3.1.43 affected
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I. Basic Information for CVE-2026-65556

Vulnerability Information
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Vulnerability Title
WordPress WPBruiser {no- Captcha anti-Spam} plugin <= 3.1.43 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in WPBruiser {no- Captcha anti-Spam} <= 3.1.43 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
WordPress WPBruiser {no- Captcha anti-Spam} 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WPBruiser {no- Captcha anti-Spam}是WordPress基金会的一款无验证码的反垃圾评论插件。 WordPress WPBruiser {no- Captcha anti-Spam} 3.1.43及之前版本存在反序列化注入漏洞，该漏洞源于未经验证的PHP对象注入。
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
MihChe WPBruiser {no- Captcha anti-Spam} n/a ~ 3.1.43 -

II. Public POCs for CVE-2026-65556

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III. Intelligence Information for CVE-2026-65556

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News Coverage for CVE-2026-65556 (1)

IV. Related Vulnerabilities

Same weakness: CWE-502

V. Comments for CVE-2026-65556

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