# CVE-2026-13167: Missing authorization in Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI

> Authenticated users with delegated form access can activate arbitrary plugins without proper authorization, potentially leading to privilege escalation or code execution.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Aug 2026
- **Updated:** 17 Aug 2026
- **Also known as:** GHSA-g2qc-vm5h-cg28

## What is CVE-2026-13167?

CVE-2026-13167 is a medium-severity missing authorization vulnerability in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI, published on 16 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.5.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with delegated form management access and above, to activate arbitrary already-installed WordPress plugins — including previously deactivated or vulnerable plugins — without holding the core activate_plugins capability. Exploitation requires the target user to hold a delegated Everest Forms capability (manage_everest_forms, everest_forms_create_forms, or everest_forms_view_forms), which the plugin's own roles and permissions tool allows administrators to assign to non-administrator roles such as Author; the nonces required to exploit the AJAX handlers are emitted on EVF admin pages accessible to any such delegated user.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-13167?


## How do I fix CVE-2026-13167?

No fix has been published for CVE-2026-13167 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-13167 being exploited?

There is no known exploitation of CVE-2026-13167 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-13167 and fix it if it is affected.

What it is: CVE-2026-13167 is a medium-severity missing authorization vulnerability in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI, published on 16 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-13167 in the wild and no public exploit code.

Affected product: wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI. 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-2026-13167/ (Markdown: https://insights.sbomify.com/CVE-2026-13167/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-13167
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-13167
- OSV: https://osv.dev/vulnerability/CVE-2026-13167

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-13167/
Summaries are generated and may contain mistakes; the official description above is the record.