CVE-2026-107660: Ffmpeg

Medium severity, CVSS 4.8. EPSS: 0.1% chance of exploitation in the next 30 days.

FFmpeg before 8.1.3 and 9.x before 9.0.2 contains an improper certificate validation vulnerability in tls_open() of libavformat/tls_mbedtls.c, which skips hostname checks for IP-address hosts. Network attackers can intercept https, rtmps, or tls connections to IP-literal URLs with any trusted CA-issued certificate to read and tamper with streams.

Affected products

• Ffmpeg Ffmpeg: before 8.1.3 (fixed in 8.1.3); from 9.0, before 9.0.2 (fixed in 9.0.2)

Published 2026-10-08. Last modified 2026-10-08.