Signal flaw could expose audio and video even after users hang up

A flaw in Signal’s calling library could let the other person on a call keep receiving a user’s audio, and possibly video, after that user hangs up. Tracked as CVE-2026-113380, the vulnerability affects RingRTC versions before 2.72.0. RingRTC is the open source library that powers voice and video calls in Signal’s apps, built on WebRTC, the technology browsers use for live audio and video.