wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
gVectors Team wpForo Forum unaffected
Version Status Constraints
2.4 affected
< 2.4.16
2.4.16 unaffected
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Project Subscriptions

Vendors Products
Gvectors Subscribe
Wpforo Forum Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://wordpress.org/plugins/wpforo/ cve-icon cve-icon
https://wordpress.org/plugins/wpforo/#developers cve-icon cve-icon
https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler cve-icon cve-icon
History

Sat, 28 Feb 2026 22:00:00 +0000

Type Values Removed Values Added
Description wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions.
Title wpForo Forum 2.4.14 Missing Authorization via Topic Close AJAX Handler
First Time appeared Gvectors
Gvectors wpforo Forum
Weaknesses CWE-862
CPEs cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:*:*:*
cpe:2.3:a:gvectors:wpforo_forum:2.4.16:*:*:*:*:*:*:*
Vendors & Products Gvectors
Gvectors wpforo Forum
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-28T21:47:35.544Z

Reserved: 2026-02-28T18:54:23.280Z

Link: CVE-2026-28555

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-28T22:16:02.010

Modified: 2026-02-28T22:16:02.010

Link: CVE-2026-28555

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses