5rahim Seanime up to 3.10.3 MediaStream transcodeHwAccel/transcodeHwAccelCustomSettings argument injection

Summaryinfo

A vulnerability was found in 5rahim Seanime up to 3.10.3 and classified as critical. The affected element is an unknown function of the component MediaStream. Executing a manipulation of the argument transcodeHwAccel/transcodeHwAccelCustomSettings can lead to argument injection. This vulnerability is handled as CVE-2026-111728. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in 5rahim Seanime up to 3.10.3. It has been declared as critical. This vulnerability affects an unknown code of the component MediaStream. The manipulation of the argument transcodeHwAccel/transcodeHwAccelCustomSettings with an unknown input leads to a argument injection vulnerability. The CWE definition for the vulnerability is CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Seanime v3.7.0 to v3.10.3 contains an argument injection vulnerability reachable through improper authorization, allowing unauthenticated LAN or Tailnet clients to bypass the privileged mediastream settings guard by setting transcodeHwAccel to custom and supplying attacker-controlled decodeFlags and encodeFlags via the transcodeHwAccelCustomSettings field, which are appended verbatim to the ffmpeg argument vector. Attackers can trigger execution via the mediastream request and HLS playlist endpoints to achieve arbitrary file write and file truncation on the host as the user running seanime, with the injected input options also enabling potential arbitrary local file read and outbound data exfiltration through ffmpeg's protocol handlers.

The advisory is available at github.com. This vulnerability was named CVE-2026-111728 since 10/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 3.10.4 eliminates this vulnerability. Applying the patch d7b13706da236473f33163b1222eb09587e93388 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• 5rahim

Name

• Seanime

Version

• 3.10.0
• 3.10.1
• 3.10.2
• 3.10.3

Website

• Product: https://github.com/5rahim/seanime/

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