RTMKit <= 2.1.5 - Authenticated (Contributor+) PHP Object Injection

7.5
Deserialization of Untrusted Data
CVE CVE-2026-84752
CVSS 7.5 (High)
Publicly Published September 2, 2026
Last Updated September 9, 2026
Researcher daroo

Description

The RTMKit plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.1.5. This is due to deserialization of untrusted input. This makes it possible for authenticated attackers, with contributor-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 RTMKit

Software Type Plugin
Software Slug rometheme-for-elementor (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.1.6, or a newer patched version
Affected Version
  • <= 2.1.5
Patched Version
  • 2.1.6

Recent vulnerabilities in RTMKit

# Title CVE ID CVSS Researchers Date
1 RTMKit <= 2.1.5 - Cross-Site Request Forgery CVE-2026-62133 4.3 MYUNGYONG LEE September 10, 2026
2 RTMKit <= 2.1.5 - Unauthenticated Stored Cross-Site Scripting CVE-2026-84763 7.2 momopon1415 September 2, 2026
3 RTMKit <= 2.0.7 - Authenticated (Contributor+) Limited Local File Inclusion via 'template' Parameter CVE-2026-5137 4.3 wesley (wcraft) July 2, 2026
4 RTMKit <= 2.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Advanced Heading Widget 'Background Text' Parameter CVE-2026-8351 6.4 theviper17y July 2, 2026
5 RTMKit Addons for Elementor <= 2.0.8 - Authenticated (Contributor+) Information Exposure CVE-2026-12906 4.3 Meher Sudhakar Abbireddi June 25, 2026
6 RTMKit Addons for Elementor <= 2.0.8 - Missing Authorization CVE-2026-12907 4.3 Meher Sudhakar Abbireddi June 25, 2026
7 RTMKit <= 2.0.7 - Authenticated (Contributor+) Missing Authorization to Arbitrary Form Submission Access via 'entries_id' Parameter CVE-2026-5149 6.5 wesley (wcraft) June 15, 2026
8 RTMKit Addons for Elementor <= 2.0.2 - Authenticated (Author+) Missing Authorization to Widget Configuration Modification CVE-2026-3426 4.3 Yuto Hyakumoto May 12, 2026
9 RTMKit Addons for Elementor <= 2.0.2 - Authenticated (Author+) Local File Inclusion via 'path' CVE-2026-3425 8.8 Yuto Hyakumoto May 12, 2026
10 RTMKit <= 1.6.8 - Reflected Cross-Site Scripting via 'themebuilder' Parameter CVE-2025-12473 6.1 LionTree March 10, 2026

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