SB2026091519 - External Control of File Name or Path in streamlink
Published: September 15, 2026
Security Bulletin ID
SB2026091519
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) External Control of File Name or Path (CVE-ID: N/A)
CWE-ID: CWE-73 - External Control of File Name or Path
CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper validation of redirect target schemes in HTTPSession redirect handling when following HTTP redirects. A remote attacker can return a redirect to a file URL to disclose sensitive information.
User interaction is required to invoke an attacker-controlled playlist, manifest, or referenced URL.
Remediation
Install update from vendor's website.