CVE-2026-44353 Details
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.
A vulnerability in Streamlink's HLS and DASH parsers prior to version 8.4.0 allows for arbitrary local file reads. The parsers do not validate the URI scheme of segment entries, enabling a remote attacker to craft a playlist or manifest that references local files. When Streamlink processes these files, their contents are streamed out, potentially exposing sensitive information such as private keys, credentials, or application config files. This issue affects versions through 8.3.0.
Users are advised to update Streamlink to version 8.4.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 27, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/streamlink/streamlink/security/advisories/GHSA-hgqw-6m45-hw5f | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/streamlink/streamlink/security/advisories/GHSA-hgqw-6m45-hw5f | [email protected] | ExploitMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| streamlink streamlink | < 8.4.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | Initial Analysis | [email protected] |
| May 27, 2026 | CVE Modified | CISA-ADP |
| May 27, 2026 | New CVE Received | [email protected] |