PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-49767 Tomdever CVE debrief

CVE-2026-49767 is a critical vulnerability in the wpForo Forum plugin for WordPress, affecting versions up to and including 3.1.0. This vulnerability allows unauthenticated users to bypass authentication mechanisms, potentially leading to unauthorized access and control of the affected system. With a CVSS score of 9.8, this vulnerability is considered critical and requires immediate attention. The vulnerability was published on June 17, 2026, and last modified on the same day. Users of the wpForo Forum plugin should take immediate action to mitigate this vulnerability.

Vendor
Tomdever
Product
wpForo Forum
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

Administrators and users of WordPress sites with the wpForo Forum plugin installed, particularly those using versions up to and including 3.1.0, should be aware of this vulnerability and take necessary actions to secure their sites.

Technical summary

The CVE-2026-49767 vulnerability is caused by a broken authentication mechanism in the wpForo Forum plugin. This allows an unauthenticated attacker to bypass normal authentication processes, potentially gaining unauthorized access to the system. The vulnerability has been assigned a CVSS score of 9.8, indicating a high severity level. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating that the vulnerability can be exploited over the network with low attack complexity and no privileges required.

Defensive priority

high

Recommended defensive actions

  • Update the wpForo Forum plugin to a version beyond 3.1.0, if available.
  • Implement additional authentication mechanisms for the wpForo Forum plugin.
  • Restrict access to the wpForo Forum plugin to authorized users only.
  • Monitor the WordPress site for suspicious activity related to the wpForo Forum plugin.
  • Consider using a Web Application Firewall (WAF) to detect and prevent exploitation attempts.
  • Regularly review and update plugins and themes to prevent exploitation of known vulnerabilities.
  • Limit the use of plugins and themes to only those that are necessary for the site's functionality.

Evidence notes

The information provided is based on data from the National Vulnerability Database (NVD) and Patchstack. The CVE record was published on June 17, 2026, and last modified on the same day. The vulnerability details are sourced from official vulnerability databases and vendor references.

Official resources

public