A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number. The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.

Cross-Site Request Forgery (CSRF) vulnerability in Rishi On Page SEO + Whatsapp Chat Button allows Stored XSS. This issue affects On Page SEO + Whatsapp Chat Button: from n/a through 2.0.0.

The WhatsApp 🚀 click to chat plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'manycontacts_code' parameter in all versions up to, and including, 3.0.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

whatsapp-api-js is a TypeScript server agnostic Whatsapp's Official API framework. It's possible to check the payload validation using the WhatsAppAPI.verifyRequestSignature and expect false when the signature is valid. Incorrect Access Control, anyone using the post or verifyRequestSignature methods to handle messages is impacted. This vulnerability is fixed in 4.0.3.

The FormFlow: WhatsApp Social and Advanced Form Builder with Easy Lead Collection WordPress plugin before 2.12.2 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 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 WhatsApp Share Button plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'whatsapp' shortcode in all versions up to, and including, 1.0.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls that could have resulted in app termination or unexpected control flow with very low probability.

A race condition in a network transport subsystem led to a heap use-after-free issue in established or unsilenced incoming audio/video calls that could have resulted in app termination or unexpected control flow with very low probability.

An integer underflow in WhatsApp could have caused remote code execution when receiving a crafted video file.