CVE-2026-62959
Severity CVSS v4.0:
HIGH
Type:
CWE-125
Out-of-bounds Read
Publication date:
31/07/2026
Last modified:
31/07/2026
Description
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 header contains up to ~870 bytes of adjacent process heap memory. The leaked region is a recycled network receive buffer that is reused without being zeroed, so on a busy server it can contain data from other clients' requests (TURN credentials, OAuth tokens, relayed payloads). Root cause is a signed→unsigned conversion. This issue is fixed in version 4.15.0.
Impact
Base Score 4.0
8.20
Severity 4.0
HIGH