Medium severity4.8NVD Advisory· Published Oct 8, 2026
CVE-2026-107660
CVE-2026-107660
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
7- code.ffmpeg.org/FFmpeg/FFmpeg/commit/0cd2a70eacd510c2efed48b9fc177c7cb2bc549fnvd
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/57a2e704b4a6eda5d061b45aacde6b19c026bfc0nvd
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/d377212904a19fc740d721cbda0ba58fa3805a29nvd
- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24383nvd
- ffmpeg.orgnvd
- github.com/FFmpeg/FFmpeg/blob/n9.0.1/libavformat/tls_mbedtls.cnvd
- www.vulncheck.com/advisories/ffmpeg-before-8.1.3-and-9-x-before-9.0.2-mbedtls-hostname-verification-bypass-for-ip-hostsnvd
News mentions
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