CVE-2026-45184: KDE Kdenlive remote code execution via malicious project file

CVE-2026-45184 · Severity: medium · CVSS 6.5 · Published 2026-05-09

Kdenlive is a professional open-source video editing application. A security flaw allows a malicious project file to execute unauthorized commands or steal data when opened by a user. This could lead to a full system compromise if a user is tricked into opening a project file from an untrusted source.

Vendors: Kde.

Quick answers

Is CVE-2026-45184 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-45184 being exploited in the wild.
How severe is CVE-2026-45184?
Medium severity, with a CVSS score of 6.5, published 9 May 2026.
Which products and versions are affected?
Kdenlive < 26.04.1.
Is there a fix for CVE-2026-45184?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-45184 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-45184?
Check whether you run Kdenlive at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability exists in Kdenlive's handling of proxy parameters within project files (CWE-829). The application failed to properly sanitize parameters passed to the underlying FFmpeg process during proxy clip generation. An attacker can craft a malicious project file containing dangerous FFmpeg arguments (such as -attach, -metadata, or protocol_whitelist) to achieve arbitrary code execution or file exfiltration. Exploitation requires a user to open a specially crafted .kdenlive project file. The issue is resolved in version 26.04.1 by implementing a blocklist for sensitive parameters and enforcing a strict protocol whitelist (file, pipe).

Affected products

  • KDE Kdenlive < 26.04.1

Timeline

  • 2026-04-03: other: Initial proxy parameter cleanup commit authored
  • 2026-04-24: other: Parameter sanitization commit authored
  • 2026-05-08: advisory: KDE Project Security Advisory released
  • 2026-05-09: disclosed: CVE published to NVD

References

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