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CVE-2026-15298— TelSender <= 1.14.14 - Unauthenticated Stored Cross-Site Scripting via Telegram Chat Title

Quick assessment

Affected
pechenki TelSender – Сontact form 7, Events, Wpforms, ninja forms and woocommerce to telegram bot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress TelSender是WordPress基金会的一款 WordPress 插件，可将 Contact Form 7、WPForms、Ninja Forms 等表单提交数据以及 WooCommerce 订单信息实时推送到 Telegram 机器人。 WordPress TelSender 1.14.14及之前版本存在跨站脚本漏洞，该漏洞源于处理Telegram API响应时输入清理不足，可能导致未经身份验证的攻击者通过Telegram聊天标题注入恶意脚本。

CVSS 7.2 · High EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
pechenki TelSender – Сontact form 7, Events, Wpforms, ninja forms and woocommerce to telegram bot ≤ 1.14.14 affected
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I. Basic Information for CVE-2026-15298

Vulnerability Information
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Vulnerability Title
TelSender <= 1.14.14 - Unauthenticated Stored Cross-Site Scripting via Telegram Chat Title
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress TelSender 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress TelSender是WordPress基金会的一款 WordPress 插件，可将 Contact Form 7、WPForms、Ninja Forms 等表单提交数据以及 WooCommerce 订单信息实时推送到 Telegram 机器人。 WordPress TelSender 1.14.14及之前版本存在跨站脚本漏洞，该漏洞源于处理Telegram API响应时输入清理不足，可能导致未经身份验证的攻击者通过Telegram聊天标题注入恶意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pechenki TelSender – Сontact form 7, Events, Wpforms, ninja forms and woocommerce to telegram bot 0 ~ 1.14.14 -

II. Public POCs for CVE-2026-15298

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III. Intelligence Information for CVE-2026-15298

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Patches & Fixes for CVE-2026-15298 (5)

IV. Related Vulnerabilities

Same vendor: pechenki
Same weakness: CWE-79

V. Comments for CVE-2026-15298

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