EUVD-2026-74608
GHSA-7jv8-f84m-pq5j
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Admin credentials required (PR:H) and a co-installed POP chain is a hard prerequisite (AC:H); full C/I/A applies only when both conditions are met.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
PHP Object Injection in the Ninja Forms WordPress plugin (all versions through 3.14.6) allows authenticated administrators to inject arbitrary PHP objects during the form import process via unsafe deserialization in WPN_Helper::build_nf_cache(). The vulnerability itself carries no inherent impact - exploitation requires a separate POP (Property Oriented Programming) chain supplied by another co-installed plugin or theme. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two simultaneous conditions: (1) the attacker must hold a WordPress administrator account (or higher) on the target site, granting access to the form import interface; and (2) at least one other installed plugin or theme on the same WordPress installation must contain a usable POP chain - without this, the deserialized object cannot perform any harmful actions. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H) yields a score of 6.6, which accurately reflects the compound prerequisites: an attacker must already hold WordPress administrator credentials (PR:H) AND a POP chain-bearing plugin or theme must be present on the target site (AC:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the Ninja Forms plugin to the version released after 3.14.6, which incorporates the fix referenced in WordPress SVN changeset 3581939 (https://plugins.trac.wordpress.org/changeset?reponame=&old=3581939%40ninja-forms&new=3581939%40ninja-forms). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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