wpForo Forum <= 3.0.5 - Authenticated (Subscriber+) Arbitrary File Deletion via Custom Profile Field File Path

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Summary

CVECVE-2026-6248
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-20 19:16:11 UTC
Updated2026-04-20 19:16:11 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

Problem Types: CWE-22 | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tomdever WpForo Forum affected 3.0.5 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/includes/functions.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Members.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3509997/wpforo [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/79cc102a-6777-41be-a395-8c2ee... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Actions.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Jude Nwadinobi (en)

CNA: wackydawg (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-13T18:36:06.000ZVendor Notified
CNA2026-04-20T05:51:32.000ZDisclosed
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