Information disclosure in streamlink - CVE-2026-44353
Published: May 11, 2026
Vulnerability identifier: #VU130973
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-44353
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in HLS and DASH parsers within file:// URI. A remote attacker can host a malicious playlist/manifest and gain unauthorized access to sensitive information on the system.
Affected software
streamlink
Fedora
python-streamlink
Fedora
python-streamlink
How to mitigate CVE-2026-44353
Install updates from vendor's website.
streamlink - update to 8.4.0
python-streamlink - addressed in versions 8.4.0-1.fc43, 8.4.0-1.fc44
python-streamlink - addressed in versions 8.4.0-1.fc43, 8.4.0-1.fc44