[ CVE-2026-107660 · Published 8 Oct 2026 ]
Vulnerability in FFmpeg
CVSS 4.8
EPSS <1%1 agency advisoryFix available
[ Description ]Official 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.
[ Fixes ]Fixes and patches
- Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
[ Advisories ]Government CERT advisories
-
BSI CERT-BundWID-SEC-2026-3820
ffmpeg: Multiple vulnerabilities Translated from German
[ References ]References
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/0cd2a70eacd510c2efed48b9fc177c7cb2bc549fPatch
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/57a2e704b4a6eda5d061b45aacde6b19c026bfc0Patch
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/d377212904a19fc740d721cbda0ba58fa3805a29Patch
- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24383Issue TrackingPatch
- ffmpeg.orgProduct
- github.com/FFmpeg/FFmpeg/blob/n9.0.1/libavformat/tls_mbedtls.cProduct
- www.vulncheck.com/advisories/ffmpeg-before-8.1.3-and-9-x-before-9.0.2-mbedtls-hostname-…Third Party Advisory