# CVE-2026-14345: WPFunnels <= 3.12.7 - Unauthenticated Remote Code Execution via 'postData' Parameter

> Unauthenticated attackers can execute arbitrary code on the server by injecting payloads into log files, provided logging is enabled and an admin views the log.

- **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:** 7 Jul 2026
- **Updated:** 8 Jul 2026
- **Also known as:** GHSA-5fwf-q2jf-gp4v

## What is CVE-2026-14345?

CVE-2026-14345 is a critical code injection vulnerability in getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.12.7 via the 'postData' parameter parameter. This is due to unsanitized write of attacker-controlled postData values into a PHP-includeable .log file combined with the use of include_once to render that file in wpfnl_show_log. This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the Log Settings "Enable Logs" toggle is on and that an administrator subsequently opens the polluted log file via the plugin's Log Settings View UI; however, the nonce required to reach the optin endpoint is publicly emitted on every funnel step page, so the injection step itself is fully unauthenticated.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-14345?


## How do I fix CVE-2026-14345?

No fix has been published for CVE-2026-14345 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14345 being exploited?

There is no known exploitation of CVE-2026-14345 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14345 and fix it if it is affected.

What it is: CVE-2026-14345 is a critical code injection vulnerability in getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-14345 in the wild and no public exploit code.

Affected product: getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell. 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-2026-14345/ (Markdown: https://insights.sbomify.com/CVE-2026-14345/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14345
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14345
- OSV: https://osv.dev/vulnerability/CVE-2026-14345

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-14345/
Summaries are generated and may contain mistakes; the official description above is the record.