CVE-2026-30867

Katalog CVE

CVSS 6.5 · Medium EPSS 0,44%

Kerentanan Reachable Assertion pada emqx cocoamqtt. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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 publishes the 4-byte malformed payload to a shared topic with the RETAIN flag set to true, the MQTT broker will persist the payload. Any time a vulnerable client connects and subscribes to that topic, the broker will automatically push the malformed packet. The app will instantly crash in the background before the user can even interact with it. This effectively "bricks" the mobile application (a persistent DoS) until the retained message is manually wiped from the broker database. This issue has been patched in version 2.2.2.

Rincian

Terbit di NVD

2 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-617: Reachable Assertion

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/emqx/CocoaMQTT/security/advisories/GHSA-r3fr-7m74-q7g2 exploit · advisory vendor
• https://github.com/emqx/CocoaMQTT/commit/010bca6f61b97d726252f61641d331a2bf82b338 patch
• https://github.com/emqx/CocoaMQTT/pull/659 issue tracking · patch
• https://github.com/emqx/CocoaMQTT/releases/tag/2.2.2 release notes