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CVE-2026-73389— WordPress Kalles Addons plugin <= 1.0.6 - PHP Object Injection vulnerability

Quick assessment

Affected
The4 Kalles Addons
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.

The4 Kalles Addons是The4公司的一款集开发模板与组件于一体的产品。 The4 Kalles Addons 1.0.6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对象注入问题，可能导致攻击者注入恶意对象。

CVSS 9.8 · Critical EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
The4 Kalles Addons n/a≤ 1.0.6 affected
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I. Basic Information for CVE-2026-73389

Vulnerability Information
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Vulnerability Title
WordPress Kalles Addons plugin <= 1.0.6 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Kalles Addons <= 1.0.6 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
The4 Kalles Addons 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
The4 Kalles Addons是The4公司的一款集开发模板与组件于一体的产品。 The4 Kalles Addons 1.0.6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对象注入问题，可能导致攻击者注入恶意对象。
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
The4 Kalles Addons n/a ~ 1.0.6 -

II. Public POCs for CVE-2026-73389

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III. Intelligence Information for CVE-2026-73389

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Vendor Advisories for CVE-2026-73389 (1)

IV. Related Vulnerabilities

Same product: Kalles Addons
Same vendor: The4
Same weakness: CWE-502

V. Comments for CVE-2026-73389

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