CVE-2026-44353

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

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.

Affected

streamlink

CVSS v3.1 GITHUB

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2026-05-27

Proof-of-concept exploits (1)

• advisories/GHSA-hgqw-6m45-hw5f

Security advisories

• streamlink/streamlink/security/advisories/GHSA-hgqw-6m45-hw5f

References

• CVE Record
• NVD entry