CVE-2026-3666Network attack vector

Subscriber-level file deletion via post-body path traversal

Published Apr 4, 2026 · Updated Apr 4, 2026

Path traversal in gVectors Team wpForo Forum 2.4.16 and earlier allows remote authenticated users to delete server files via crafted forum posts. The Posts.php deletion flow parses attachment paths embedded in post-body content and passes them to the WordPress file-deletion API without rejecting traversal sequences. Subscriber-level access is sufficient, and deletion is limited to server files writable by PHP, including files whose loss can interrupt the site.

CVSS severity8.8
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in gVectors Team wpForo Forum 2.4.16 and earlier allows remote authenticated users to delete server files via crafted forum posts. The Posts.php deletion flow parses attachment paths embedded in post-body content and passes them to the WordPress file-deletion API without rejecting traversal sequences. Subscriber-level access is sufficient, and deletion is limited to server files writable by PHP, including files whose loss can interrupt the site.

The record

CVE
CVE-2026-3666
Published
Apr 4, 2026
Updated
Apr 4, 2026
Vendor
AdvancedCoding
Product
wpForo Forum
Classifications
CWE-22, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.4.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AdvancedCoding · wpForo Forumversion=0 <=2.4.16

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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