CVE-2026-44353CWE-22

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

Medium · published May 27, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
38.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00454 · 38.4th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-05-27T15:10Z
EPSS history
Timeline
  • 27 MAY 15:10Z
    Streamlink: Arbitrary local file read via file:// URI in HLS and DASH
    cvelistv5