CVE-2026-28557
Missing Capability Check in wpForo 2.4.14 Enables Usergroup Reassignment
Publication date: 2026-02-28
Last updated on: 2026-03-04
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gvectors | wpforo_forum | From 2.4.0 (inc) to 2.4.16 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in wpForo Forum version 2.4.14 is due to a missing capability check that allows any authenticated user to trigger a bulk reassignment of wpForo usergroups. This is done via the wpforo_synch_roles AJAX handler. Essentially, attackers can access the usergroups admin page, which is accessible to all authenticated users, obtain a security nonce, and then remap all wpForo usergroups to arbitrary WordPress roles.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing an authenticated user to change the roles of all wpForo usergroups to any WordPress roles they choose. This can lead to unauthorized privilege escalation within the forum, potentially allowing users to gain higher permissions than intended, which can compromise the integrity and security of the forum.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know