CVE-2026-15298 TelSender <= 1.14.14 - Unauthenticated Stored Cross-Site Scripting via Telegram Chat Title
Unauthenticated attackers can inject malicious scripts via Telegram chat titles that execute when an administrator interacts with the plugin settings.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15298?
CVE-2026-15298 is a high-severity cross-site scripting vulnerability in pechenki TelSender – Сontact form 7, Events, Wpforms, ninja forms and woocommerce to telegram bot, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-15298?
How do I fix CVE-2026-15298?
No fix has been published for CVE-2026-15298 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-15298 being exploited?
There is no known exploitation of CVE-2026-15298 in the wild and no public exploit code.
Sources
Also known as GHSA-fxxv-579v-962v.