CVE-2026-15298
Received Received - Intake

DOM-Based XSS in TelSender WordPress Plugin

Publication date: 2026-07-10

Last updated on: 2026-07-10

Assigner: Wordfence

Description
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.

CVSS Scores

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Meta Information

Published
2026-07-10
Last Modified
2026-07-10
Generated
2026-07-10
AI Q&A
2026-07-10
EPSS Evaluated
N/A
NVD
CVE-2026-15298
EUVD
EUVD-2026-42805

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tel_sender tel_sender to 1.14.14 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The TelSender plugin for WordPress has a vulnerability known as DOM-Based Cross-Site Scripting (XSS) in all versions up to and including 1.14.14.

This vulnerability arises because the plugin does not properly sanitize input when processing Telegram API responses that contain attacker-controlled chat titles.

As a result, an unauthenticated attacker can inject malicious scripts via these Telegram chat titles.

These scripts execute when an administrator opens the TelSender settings page and clicks the "Tested" button.

Impact Analysis

This vulnerability can allow an unauthenticated attacker to execute malicious scripts in the context of the WordPress administrator's browser.

Such script execution can lead to the attacker gaining access to sensitive information, performing actions on behalf of the administrator, or compromising the integrity of the WordPress site.

The CVSS score of 7.2 indicates a high severity, with low attack complexity and no privileges required, making it relatively easy to exploit.

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