Template Injection Vulnerability in Supsystic Smart Popup Plugin for WordPress
CVE-2026-115223

4.9MEDIUM

Key Information:

Vendor

WordPress
Status
Smart Popup By Supsystic
Vendor
CVE Published:
28 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-115223?

The Smart Popup by Supsystic plugin for WordPress before version 2.0.2 is vulnerable to template injection due to improper handling of template delimiters. An authenticated administrator can exploit this vulnerability by injecting arbitrary template expressions into a popup text block. These injected payloads can subsequently be evaluated by the plugin’s template engine, allowing attackers to execute server-side code that can expose sensitive information, such as database credentials and authentication keys. This vulnerability arises because the filter intended to sanitize the input does not adequately preprocess template delimiters before decoding, enabling potential unauthorized access to critical site configurations.

Affected Version(s)

Smart Popup by Supsystic 0 < 2.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-115223 - Proof of Concept

References

https://wpscan.com/vulnerability/cf475664-aa8f-49ec-b1d6-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.