Improper Validation of Certificate with Host Mismatch Affecting ffmpeg package, versions <7:9.0.2-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-DEBIAN14-FFMPEG-20698440
  • published10 Oct 2026
  • disclosed8 Oct 2026

Introduced: 8 Oct 2026

NewCVE-2026-107660  (opens in a new tab)
CWE-297  (opens in a new tab)

How to fix?

Upgrade Debian:14 ffmpeg to version 7:9.0.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1