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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-28556

CVE-2026-28556

MEDIUM5.4

wpForo Forum 2.4.14 Missing Authorization via Topic Management Form Handlers

Published Feb 28, 2026

Modified 4 days ago

Details

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.

References

https://wordpress.org/plugins/wpforo/

https://wordpress.org/plugins/wpforo/#developers

https://www.cve.org/CVERecord?id=CVE-2026-28556

https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-management-form-handlers

CVSS Analysis

CVSS v4.0

5.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

LowVC:L

Vuln. Integrity

LowVI:L

Vuln. Availability

NoneVA:N

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

5.3/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

Weakness Type (CWE)

Access Control

Missing Authorization

Ecosystems

Timeline

PublishedFeb 28, 2026

ModifiedFeb 28, 2026

CVE-2026-28556 | Mondoo Vulnerability Intelligence