CVE-2026-44353

MEDIUM

Streamlink: Arbitrary local file read via file:// URI in HLS and DASH

Title source: cna
STIX 2.1

Description

Streamlink is a CLI utility which pipes video streams from various services into a video player. Prior to 8.4.0, Streamlink's HLS and DASH parsers do not validate the URI scheme of segment entries and other resources. A remote .m3u8 HLS playlist or .mpd DASH manifest can list file:///path/to/file as a segment, and streamlink will read that local file and write its contents to the output stream. This vulnerability is fixed in 8.4.0.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0030
EPSS Percentile 21.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (2)
pypi/streamlink 0 - 8.4.0PyPI
streamlink/streamlink < 8.4.0 (2 CPE variants)
Published May 27, 2026
Tracked Since May 27, 2026