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FFmpeg before 8.1.3 and 9.x before 9.0.2 mbedTLS Hostname Verification Bypass for IP Hosts

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-107660

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-107660

FFmpeg

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
    "vendor": "FFmpeg",
    "product": "FFmpeg",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "8.1.3",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "9.0",
        "lessThan": "9.0.2",
        "versionType": "custom"
      }
    ],
    "packageURL": "pkg:github/ffmpeg/ffmpeg",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-107660

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#13050 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement