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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Fixes

Solution

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Workaround

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History

Thu, 08 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
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.
Title FFmpeg before 8.1.3 and 9.x before 9.0.2 mbedTLS Hostname Verification Bypass for IP Hosts
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-297
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-08T17:25:50.450Z

Reserved: 2026-10-08T14:50:58.333Z

Link: CVE-2026-107660

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-08T16:17:04.893

Modified: 2026-10-08T16:17:04.893

Link: CVE-2026-107660

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses