CVE-2026-120320: jxxghp MoviePilot unsafe deserialization in workflow fork

CVE-2026-120320 · Severity: medium · CVSS 4.7 · Published 2026-11-02

MoviePilot is a NAS media library automation tool. An authenticated user with manage permission can craft a malicious workflow and trigger remote code execution through unsafe deserialization of pickle objects, potentially compromising the entire system running MoviePilot.

Technologies: Jxxghp MoviePilot. Vendors: Jxxghp.

Quick answers

Is CVE-2026-120320 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-120320 being exploited in the wild.
How severe is CVE-2026-120320?
Medium severity, with a CVSS score of 4.7, published 2 November 2026.
Which products and versions are affected?
Jxxghp MoviePilot up to 3.1.2.
Is there a fix for CVE-2026-120320?
Yes: fixed in 3.1.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120320 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-120320?
Check whether you run Jxxghp MoviePilot 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.

How to fix

  • Fixed in: 3.1.3

Technical details

The WorkflowExecutor.restore_context() method in app/chain/workflow.py unsafely deserializes user-controlled pickle data from the workflow.context database column without signature verification or type allowlisting. An authenticated user can exploit the POST /api/v1/workflow/fork endpoint to inject a crafted base64-encoded pickle payload via the context field, which is then deserialized via pickle.loads() when the workflow is executed, allowing arbitrary code execution with service process privileges.

Affected products

  • jxxghp MoviePilot up to 3.1.2

Timeline

  • 2026-11-02: disclosed

References

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