CVE-2026-28556 | THREATINT

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.

PUBLISHED Reserved 2026-02-28 | Published 2026-02-28 | Updated 2026-02-28 | Assigner VulnCheck

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Problem types

Missing Authorization

Product status

Default status

unaffected

2.4 (semver) before 2.4.16

affected

2.4.16 (semver)

unaffected

Credits

Scott Moore - VulnCheck finder

References

wordpress.org/plugins/wpforo/ (wpForo Forum WordPress Plugin) product

wordpress.org/plugins/wpforo/ (wpForo Forum Contributors & Developers) patch

www.vulncheck.com/...tion-via-topic-management-form-handlers (VulnCheck Advisory: wpForo Forum 2.4.14 Missing Authorization via Topic Management Form Handlers) third-party-advisory

cve.org (CVE-2026-28556)

nvd.nist.gov (CVE-2026-28556)

Download JSON