CVE-2026-28555

MEDIUM 4.3

wpForo Forum 2.4.14 Missing Authorization via Topic Close AJAX Handler

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	gvectors team
Product	wpforo forum
Published	Feb 28, 2026
Last Updated	Mar 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

gVectors Team / wpForo Forum

2.4 < 2.4.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordpress.org: https://wordpress.org/plugins/wpforo/ wordpress.org: https://wordpress.org/plugins/wpforo/#developers vulncheck.com: https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler

Credits

Scott Moore - VulnCheck