What is CVE-2026-115223?

CVE-2026-115223 is a medium-severity vulnerability in Smart Popup By Supsystic, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 4.9/10. Published 2026-10-28.

How severe is CVE-2026-115223?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Smart Popup By Supsystic

CVE-2026-115223

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.

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Smart Popup By Supsystic

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

wpscan.com/vulnerability/cf475664-aa8f-49ec-b1d6-62139dbad8d4/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-115223?: CVE-2026-115223 is a medium-severity vulnerability in Smart Popup By Supsystic, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 4.9/10. Published 2026-10-28.
How severe is CVE-2026-115223?: Medium severity. CVSS v3 base score is 4.9 out of 10.