CVE-2026-62959

A flaw was found in Coturn. When configured with ACME redirect and a plaintext-TCP listener, an unauthenticated remote client can send an HTTP GET request. This action can lead to the disclosure of up to approximately 870 bytes of adjacent process heap memory. On a busy server, this leaked memory...

Linux Distros Unpatched Vulnerability : CVE-2026-62959

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Coturn is a free open source implementation of TURN and STUN Server. From 4.5.2 through 4.14.0, when Coturn is started with --acme-redirect and exposes a...

CVE-2026-62959 Coturn: Pre-authentication heap memory disclosure in ACME redirect (`try_acme_redirect`)

Coturn is a free open source implementation of TURN and STUN Server. From 4.5.2 through 4.14.0, when Coturn is started with --acme-redirect and exposes a plaintext-TCP listener, an unauthenticated remote client can send a single ordinary HTTP GET request and receive a 301 response whose Location...

PT-2026-66853

Name of the Vulnerable Software and Affected Versions Coturn versions 4.5.2 through 4.14.0 Description When started with the --acme-redirect parameter and exposing a plaintext-TCP listener, an unauthenticated remote client can send an HTTP GET request to trigger a memory leak. The server responds...