CVE-2026-28556

wpForo Forum 2.4.14 Missing Authorization via Topic Management Form Handlers

State: Published
Severity: 5.3 Medium
Published: Feb 28, 2026
Updated: May 11, 2026
Reserved: Feb 28, 2026

Description

wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to move, merge, or split any forum topic via the topic_move, topic_merge, and topic_split form action handlers. Attackers with a valid form nonce can reorganize arbitrary forum content without moderator permissions, including relocating topics to private forums.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
wpForo ForumgVectors Team	2.4 to before 2.4.16Affected 2.4.16Not affected

References

wpForo Forum WordPress Pluginproduct
wpForo Forum Contributors & Developerspatch
VulnCheck Advisory: wpForo Forum 2.4.14 Missing Authorization via Topic Management Form Handlersthird-party-advisory

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