Vulnerability in Smart Popup by Supsystic — CVE-2026-115223
MediumSeverity
—Estimated exploit probability
10,000+ sitesInstalls
2.0.2Fixed in
What to do now
Update Smart Popup by Supsystic to 2.0.2 or later.
Affected versions
- Everything before 2.0.2
Affected: Smart Popup by Supsystic (plugin, popup-by-supsystic)
What the vulnerability is
The Smart Popup by Supsystic WordPress plugin before 2.0.2 does not prevent template-injection payloads from being stored in a popup text block and later evaluated by its template engine, because the filter meant to strip template delimiters runs before a decoding step that reconstructs them, allowing an authenticated administrator to execute arbitrary template expressions server-side and read PHP constants such as the site's database credentials and authentication keys.