CVE-2025-9083
CWE-502Published: September 18, 2025· Updated: Jun 17, 2026
Official Description
The Ninja Forms WordPress plugin before 3.11.1 unserializes user input via form field, which could allow Unauthenticated users to perform PHP Object Injection when a suitable gadget is present on the blog.
Risk Analysis
The Ninja Forms WordPress plugin contains an insecure deserialization flaw that allows unauthenticated attackers to perform PHP Object Injection. This critical vulnerability could lead to remote code execution if a suitable gadget chain is present.
The vulnerability is remotely exploitable with low complexity, but there is no known public exploit and it is not in the KEV.
Update the Ninja Forms plugin to version 3.11.1 or later immediately.
Technical Analysis
CVE-2025-9083 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-502)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-9083 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts