Is CVE-2026-91092 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-91092 being exploited in the wild.

How severe is CVE-2026-91092?

Medium severity, with a CVSS score of 4.3, published 22 September 2026.

Which products and versions are affected?

wpForo Forum up to and including 3.1.5.

Is there a fix for CVE-2026-91092?

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-2026-91092 attacked?

It is attacked over the network.

Am I affected by CVE-2026-91092?

Check whether you run 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.

CVE-2026-91092: wpForo Forum authorization bypass in post editing

CVE-2026-91092 · Severity: medium · CVSS 4.3 · Published 2026-09-22

The wpForo Forum plugin for WordPress does not properly verify user permissions when editing forum posts. An authenticated user with subscriber-level access can modify guest author posts—including title, body, author name, and associated email address—if guest posting and editing features are enabled. This allows account takeover of guest authorship and potential reputation damage or content manipulation.

Technologies: wpForo Forum. Vendors: wpForo.

Quick answers

Is CVE-2026-91092 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-91092 being exploited in the wild.
How severe is CVE-2026-91092?: Medium severity, with a CVSS score of 4.3, published 22 September 2026.
Which products and versions are affected?: wpForo Forum up to and including 3.1.5.
Is there a fix for CVE-2026-91092?: 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-2026-91092 attacked?: It is attacked over the network.
Am I affected by CVE-2026-91092?: Check whether you run 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 vulnerability is an authorization bypass in post editing functionality affecting wpForo versions up to 3.1.5. An authenticated subscriber can edit guest-authored posts by supplying the target guest author's email address, due to insufficient permission checks in the Actions.php and Members.php classes. Exploitation requires guest posting/editing to be enabled; the attacker must know the guest email address.

Affected products

wpForo wpForo Forum up to and including 3.1.5

Timeline

2026-09-22: disclosed

References

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