CVE-2023-6601

Ffmpeg: hls unsafe file extension bypass in ffmpeg

Published Jan 6, 2025 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Description
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4241-1 ffmpeg security update
EUVD EUVD EUVD-2023-58824 A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
History
Type Values Removed Values Added
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics epss

{'score': 0.00037}

epss

{'score': 0.00047}

Type Values Removed Values Added
Weaknesses CWE-94
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
Title Ffmpeg: hls unsafe file extension bypass in ffmpeg
Weaknesses CWE-99
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Nov 3, 2025, 7:29 PM
Reserved
Dec 8, 2023, 6:52 AM
Status
Modified
Published
Jan 6, 2025, 5:15 PM
Modified
Jun 17, 2026, 6:51 AM