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CVE-2026-49768— WordPress Happyforms plugin <= 1.26.13 - PHP Object Injection vulnerability

Quick assessment

Affected
Happyforms Happyforms
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.

happyforms是happyforms个人开发者开源的一款表单构建插件。 happyforms 1.26.13及之前版本存在反序列化漏洞，该漏洞源于PHP对象注入问题，可能导致未经身份验证的攻击者执行任意代码。

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
Happyforms Happyforms n/a≤ 1.26.13 affected
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I. Basic Information for CVE-2026-49768

Vulnerability Information
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Vulnerability Title
WordPress Happyforms plugin <= 1.26.13 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Happyforms <= 1.26.13 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
happyforms 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
happyforms是happyforms个人开发者开源的一款表单构建插件。 happyforms 1.26.13及之前版本存在反序列化漏洞，该漏洞源于PHP对象注入问题，可能导致未经身份验证的攻击者执行任意代码。
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
Happyforms Happyforms n/a ~ 1.26.13 -

II. Public POCs for CVE-2026-49768

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III. Intelligence Information for CVE-2026-49768

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Patches & Fixes for CVE-2026-49768 (1)

IV. Related Vulnerabilities

Same product: Happyforms
Same vendor: Happyforms
Same weakness: CWE-502

V. Comments for CVE-2026-49768

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