How severe is CVE-2026-15298?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Pechenki Telsender – Сontact Form 7, Events, Wpforms, Ninja Forms And Woocommerce To Telegram Bot

CVE-2026-15298

The TelSender plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting in all versions up to, and including, 1.14.14. This is due to insufficient input sanitization when processing Telegram API responses containing attacker-controlled chat titles. This makes it possible for unauthenticated attackers to inject malicious scripts via Telegram chat titles that execute when an administrator opens the TelSender settings page and clicks the "Tested" button.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (24.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Pechenki Telsender – Сontact Form 7, Events, Wpforms, Ninja Forms And Woocommerce To Telegram Bot — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-15298?: CVE-2026-15298 is a high-severity vulnerability in Pechenki Telsender – Сontact Form 7, Events, Wpforms, Ninja Forms And Woocommerce To Telegram Bot, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-07-10.
How severe is CVE-2026-15298?: High severity. CVSS v3 base score is 7.2 out of 10.