# CVE-2025-9083: Ninja-forms < 3.11.1 - Unauthenticated PHP Objection

> Unauthenticated attackers can trigger PHP object injection via form fields, potentially leading to code execution if suitable gadgets exist.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2025
- **Updated:** 22 Sep 2025
- **Also known as:** GHSA-q88q-7pp2-q72v

## What is CVE-2025-9083?

CVE-2025-9083 is a critical unsafe deserialization vulnerability in Ninjaforms Ninja Forms, published on 18 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2025-9083?

It affects 1 product.


Products: Ninjaforms Ninja Forms.

## How do I fix CVE-2025-9083?

No fix has been published for CVE-2025-9083 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-9083 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9083 exists.

## Other vulnerabilities in Ninjaforms Ninja Forms

- [CVE-2016-1209](https://insights.sbomify.com/CVE-2016-1209/): Deserialization in n/a (critical 9.8)
- [CVE-2018-20981](https://insights.sbomify.com/CVE-2018-20981/): Information disclosure in n/a (critical 9.1)
- [CVE-2024-25572](https://insights.sbomify.com/CVE-2024-25572/): Cross-site request forgery in Ninja Forms (high 8.8)
- [CVE-2021-24163](https://insights.sbomify.com/CVE-2021-24163/): Ninja Forms < 3.4.34 - Authenticated SendWP Plugin Installation and Client Secret Key Disclosure (high 8.8)
- [CVE-2018-16308](https://insights.sbomify.com/CVE-2018-16308/): Other in n/a (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-9083 and fix it if it is affected.

What it is: CVE-2025-9083 is a critical unsafe deserialization vulnerability in Ninjaforms Ninja Forms, published on 18 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9083 exists.

Affected product: Ninjaforms Ninja Forms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-9083/ (Markdown: https://insights.sbomify.com/CVE-2025-9083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-9083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-9083
- OSV: https://osv.dev/vulnerability/CVE-2025-9083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-9083/
Summaries are generated and may contain mistakes; the official description above is the record.