EUVD-2026-18235

CocoaMQTT: Denial of Service via Reachable Assertion in PUBLISH Packet Parsing...

CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing

A vulnerability exists in the packet parsing logic of CocoaMQTT that allows an attacker or a compromised/malicious MQTT broker to remotely crash the host iOS/macOS/tvOS application. The vulnerability is located in Source/FramePublish.swift during the extraction of the Topic string from the incomi...

CVE-2026-30867 CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing

CocoaMQTT is a MQTT 5.0 client library for iOS and macOS written in Swift. Prior to version 2.2.2, a vulnerability exists in the packet parsing logic of CocoaMQTT that allows an attacker or a compromised/malicious MQTT broker to remotely crash the host iOS/macOS/tvOS application. If an attacker...