USN-8856-1: Kdenlive, MLT vulnerability
Publication date
30 September 2026
Overview
Kdenlive, MLT could be made to run programs as your login if it opened a specially crafted file.
Releases
Details
It was discovered that Kdenlive allowed dangerous proxy parameters when
processing attacker-controlled project files. An attacker could use this to
execute arbitrary commands via the MLT framework's ante/post consumer
properties.
It was discovered that Kdenlive allowed dangerous proxy parameters when
processing attacker-controlled project files. An attacker could use this to
execute arbitrary commands via the MLT framework's ante/post consumer
properties.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | kdenlive – 4:25.12.3-0ubuntu1.1 | ||
| libmlt7 – 7.36.1-1ubuntu3.1 | |||
| melt – 7.36.1-1ubuntu3.1 | |||
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