CVE-2026-28555

wpForo Forum 2.4.14 Missing Authorization via Topic Close AJAX Handler

MEDIUM
4.3
CVSS Score
Published: February 28, 2026 at 09:47 PM UTC
Updated: June 17, 2026 at 10:28 AM UTC
1 product affected across 1 vendorwpForo Forum

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

wpForo Forum· Gvectorswordpress-plugin
95%
2.4 ≤ v < 2.4.162.4.0 ≤ v < 2.4.162.4
Vendor states this is fixed in 2.4.16 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-862

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