wpForo Forum <= 3.1.5 - Authenticated (Subscriber+) PHP Object Injection

7.5
Deserialization of Untrusted Data
CVE CVE-2026-80513
CVSS 7.5 (High)
Publicly Published September 22, 2026
Last Updated September 29, 2026
Researcher Sai Praneeth Koti

Description

The wpForo Forum plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.5. This is due to deserialization of untrusted input. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

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Vulnerability Details for wpForo Forum

Software Type Plugin
Software Slug wpforo (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.1.6, or a newer patched version
Affected Version
  • <= 3.1.5
Patched Version
  • 3.1.6

Recent vulnerabilities in wpForo Forum

# Title CVE ID CVSS Researchers Date
1 wpForo Forum <= 3.1.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'telegram' Profile Field CVE-2026-93747 6.4 Ivaylo September 24, 2026
2 wpForo Forum <= 3.1.5 - Authenticated (Subscriber+) Stored Cross-Site Scripting CVE-2026-93772 6.4 neurotx September 23, 2026
3 wpForo Forum 3.0.0 - 3.1.5 - Unauthenticated AI Credit Exhaustion CVE-2026-80514 5.3 Usama Arshad September 22, 2026
4 wpForo Forum <= 3.1.5 - Missing Authorization to Authenticated (Subscriber+) Guest Post Takeover via wpforo_post_edit Action / Forged comment_author_email Cookie CVE-2026-91092 4.3 Jonah Burgess (CryptoCat) September 21, 2026
5 wpForo Forum <= 2.4.17 - Unauthenticated SQL Injection via 'referer' Parameter CVE-2026-5097 7.5 Leonid Semenenko (lsemenenko) August 27, 2026
6 wpForo Forum <= 3.1.2 - Missing Authorization to Authenticated (Subscriber+) Account Status Manipulation CVE-2026-12698 4.3 Yaswanth Reddy Sunkara July 27, 2026
7 wpForo Forum <= 3.1.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting CVE-2026-12696 6.4 Revanth Hari Narayana Matte July 20, 2026
8 wpForo Forum <= 3.1.1 - Insecure Direct Object Reference to Authenticated (Subscriber+) Chat Message Deletion CVE-2026-12697 4.3 Revanth Hari Narayana Matte July 16, 2026
9 wpForo Forum <= 3.1.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'location' Profile Field CVE-2026-15021 6.4 valent1 July 15, 2026
10 wpForo Forum <= 3.0.9 - Authenticated (Contributor+) SQL Injection CVE-2026-57636 6.5 daroo June 26, 2026

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