The Notification for Telegram plugin for WordPress is vulnerable to unauthorized test message sending due to a missing capability check on the 'nftb_test_action' function in versions up to, and including, 3.3.1. This makes it possible for authenticated attackers, with subscriber-level access and above, to send a test message via the Telegram Bot API to all users configured in the settings.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WP Socio WP Telegram Widget and Join Link allows Stored XSS.This issue affects WP Telegram Widget and Join Link: from n/a through 2.1.27.

EvilVideo vulnerability allows sending malicious apps disguised as videos in Telegram for Android application affecting versions 10.14.4 and older.

Jenkins Telegram Bot Plugin 1.4.0 and earlier stores the Telegram Bot token unencrypted in its global configuration file on the Jenkins controller where it can be viewed by users with access to the Jenkins controller file system.

The Floating Chat Widget: Contact Chat Icons, WhatsApp, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button WordPress plugin before 3.1.9 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

The Chat Bubble – Floating Chat with Contact Chat Icons, Messages, Telegram, Email, SMS, Call me back plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Telegram v9.6.3 on iOS allows attackers to hide critical information on the User Interface via calling the function SFSafariViewController.

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Marco Milesi Telegram Bot & Channel plugin <= 3.6.2 versions.

Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or video recording via the DYLD_INSERT_LIBRARIES flag.

Telegram Web 15.3.1 allows XSS via a certain payload derived from a Target Corporation website. NOTE: some third parties have been unable to discern any relationship between the Pastebin information and a possible XSS finding.