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CVE-2026-11363— Ninja Forms <= 3.14.6 - Authenticated (Administrator+) PHP Object Injection via Form Import

Quick assessment

Affected
kstover Ninja Forms – The Contact Form Builder That Grows With You
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 插件 “Ninja Forms – The Contact Form Builder That Grows With You” 在所有版本中（包括 3.14.6 及之前版本）均存在 PHP 对象注入漏洞，源于对不可信输入的反序列化处理。该漏洞使得拥有管理员级别或更高权限的已认证攻击者能够注入 PHP 对象。 目前，受影响的软件本身不存在已知的 POP 链（Property-Oriented Programming chain），这意味着除非站点上安装了包含 POP 链的其他插件或主题，否则该漏洞

CVSS 6.6 · Medium
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I. Basic Information for CVE-2026-11363

Vulnerability Information
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Vulnerability Title
Ninja Forms <= 3.14.6 - Authenticated (Administrator+) PHP Object Injection via Form Import
Source: CVE Program / CVE List V5
Vulnerability Description
The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.6 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. The deserialization is triggered automatically during form import when WPN_Helper::build_nf_cache() invokes $action->get_settings() immediately after the crafted form is imported, requiring no further interaction beyond the import action itself.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
kstover Ninja Forms – The Contact Form Builder That Grows With You 0 ~ 3.14.6 -

II. Public POCs for CVE-2026-11363

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III. Intelligence Information for CVE-2026-11363

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Other References for CVE-2026-11363 (6)

IV. Related Vulnerabilities

Same product: Ninja Forms – The Contact Form Builder That Grows With You
Same vendor: kstover
Same weakness: CWE-502

V. Comments for CVE-2026-11363

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