CVE-2026-44353

EUVD-2026-32559

27.05.2026, 17:16

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.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.5 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 26%

Affected Products (NVD)

Vendor	Product	Version
streamlink	streamlink	𝑥 < 8.4.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

streamlink

bookworm	no-dsa
bullseye	no-dsa
forky	8.4.0-2 fixed
sid	8.4.0-2 fixed
trixie	no-dsa

Known Exploits!

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References

https://github.com/streamlink/streamlink/security/advisories/GHSA-hgqw-6m45-hw5f