dbcve.org
Missing AuthorizationWeakness · CWE-862

CVE-2026-42682

CRITICAL · 9.1 CVSS v3.1 Published 2026-06-01
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Missing Authorization vulnerability in Tomdever wpForo Forum allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects wpForo Forum: from n/a through 3.0.6.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Missing authorization vulnerability in wpForo Forum allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthenticated or low-privilege users to access sensitive forum functionality or data that should be restricted.

MitigationImplement proper authorization checks at all access points, review and correct access control security level configurations, and update to the latest patched version of wpForo Forum when available.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify wpForo version
    Navigate to wpForo > Dashboard in WordPress admin, or check the plugin file header in /wp-content/plugins/wpforo/ folder for the 'Version' comment
    Affected if Installed version is 3.0.6 or lower (any version prior to the patched release)
  2. Verify user role configuration
    Go to wpForo > Settings > Members tab and review the Security Level settings for each user role (Guest, Member, Moderator, Admin). Check if roles are assigned appropriate permission levels.
    Affected if Roles have incorrectly configured security levels that allow lower-privileged or unauthenticated users to access higher-privileged actions
  3. Test access to admin functions
    Using a non-admin account or as a guest, attempt to access wpForo admin URLs such as /wp-admin/admin.php?page=wpforo-settings, /wp-admin/admin.php?page=wpforo-addons, or similar admin routes
    Affected if Non-admin or unauthenticated users can access or modify forum settings or admin functions
  4. Inspect capability checks in code
    Review wpForo plugin files in /wp-content/plugins/wpforo/ for missing current_user_can() calls before sensitive operations, particularly in ajax handlers or frontend submission endpoints
    Affected if Sensitive forum actions lack proper capability verification checks
  5. Check AJAX endpoint permissions
    Use browser developer tools or curl to send requests to wpForo AJAX actions (admin-ajax.php?action=wpforo...) as an unauthenticated or low-privileged user
    Affected if AJAX endpoints execute privileged operations without proper authorization validation

A user is affected if wpForo version is 3.0.6 or lower AND the forum allows unauthenticated or low-privileged users to access admin settings, modify forum configuration, or execute privileged actions that should require higher permissions.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper authorization checks at all access points, review and correct access control security level configurations, and update to the latest patched version of wpForo Forum when available.

Recommended fix Moderate confidence

Latest wpForo Forum version (currently available on wordpress.org or official source)

  1. 1. Back up your WordPress database and files before making any changes.
  2. 2. Update wpForo Forum plugin to the latest available version through WordPress admin dashboard (Plugins > wpForo Forum > Update Now).
  3. 3. Alternatively, download the latest wpForo Forum plugin from the official WordPress repository or wpforo.com and upload via FTP.
  4. 4. After updating, verify that user roles and access control settings are configured correctly in wpForo > Settings > Members > Access Levels.
  5. 5. Test that unauthorized users cannot access restricted forum content or administrative functions.
Caveat Review plugin changelog for any template or hook changes that may affect customizations

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-42682 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-42682 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data