CVE-2026-49769: gVectors wpForo Forum PHP object injection

CVE-2026-49769 · Severity: critical · CVSS 9.8 · Published 2026-06-15

wpForo Forum is a popular community forum plugin for WordPress websites. A critical security flaw allows unauthorized individuals to inject malicious code into the website's server. If exploited, this could lead to a total takeover of the website, theft of user data, or a complete shutdown of the forum services.

Technologies: gVectors Team wpForo Forum. Vendors: gVectors Team.

Quick answers

Is CVE-2026-49769 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-49769 being exploited in the wild.
How severe is CVE-2026-49769?
Critical severity, with a CVSS score of 9.8, published 15 June 2026.
Which products and versions are affected?
gVectors Team wpForo Forum <= 3.1.0.
Is there a fix for CVE-2026-49769?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-49769 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-49769?
Check whether you run gVectors Team wpForo Forum at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The wpForo Forum plugin for WordPress is vulnerable to PHP Object Injection in versions up to and including 3.1.0. This vulnerability occurs due to the deserialization of untrusted data (CWE-502) without proper validation. An unauthenticated remote attacker can exploit this by sending specially crafted input to the application. If a suitable Property-Oriented Programming (POP) chain is present in the environment, the attacker can achieve remote code execution, perform SQL injection, or conduct arbitrary file deletion. The issue is resolved in version 3.1.1.

Affected products

  • gVectors Team wpForo Forum <= 3.1.0

Timeline

  • 2026-05-11: other: Vulnerability reported by researcher daroo
  • 2026-06-04: advisory: Patchstack advisory published
  • 2026-06-15: disclosed: CVE published to NVD

References

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