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Kdenlive and MLT Vulnerability Allows Command Execution via Malicious Files

Kdenlive and MLT Vulnerability Allows Command Execution via Malicious Files

First seen 30 Sep 2026, 22:30 UTC • •
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ThreatCluster AI
ThreatCluster •September 30, 2026 at 23:29 UTC
  • •Kdenlive and MLT vulnerability allows command execution via malicious project files.
  • •Affected systems include Ubuntu 26.04 LTS with specific package versions.
  • •Users should update their systems to mitigate the risk.

A vulnerability in Kdenlive and the MLT framework could allow attackers to execute arbitrary commands on an user's system by opening specially crafted project files. This flaw arises from the handling of dangerous proxy parameters within Kdenlive, a KDE Non-Linear Video Editor, and the MLT Multimedia Framework. Users of Ubuntu 26.04 LTS are particularly affected, with specific package versions identified for updating. A standard system update is recommended to mitigate the risk. The vulnerability has been assigned the identifier USN-8856-1, and users are advised to apply the necessary updates to reduce their security exposure. No has been reported at this time.

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Timeline

2026-09-30
Vulnerability disclosed
Kdenlive and MLT vulnerability USN-8856-1 was disclosed, allowing command execution via crafted files.
Ubuntu
2026-09-30
Patch released
Ubuntu released updates for affected packages to address the vulnerability.
Linuxsecurity

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Common questions

Which versions of Kdenlive and MLT are affected?
The vulnerability affects Kdenlive and MLT in Ubuntu 26.04 LTS, specifically versions 4:25.12.3-0ubuntu1.1 and 7.36.1-1ubuntu3.1.
Is there any active exploitation of this vulnerability?
No active exploitation has been reported at this time.
What should users do to protect themselves?
Users should update their systems to the latest package versions as recommended in the security notice.