🔐 CVE Alert

CVE-2026-91092

MEDIUM 4.3

wpForo Forum <= 3.1.5 - Missing Authorization to Authenticated (Subscriber+) Guest Post Takeover via wpforo_post_edit Action / Forged comment_author_email Cookie

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author's forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author's email address.

CWE CWE-862
Vendor tomdever
Product wpforo forum
Published Sep 22, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

tomdever / wpForo Forum
0 ≤ 3.1.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo

Credits

Jonah Burgess (CryptoCat)