CVE-2026-78430: sworddut mcp-ffmpeg-helper Tool handlers.ts handleToolCall os command injection

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-24 · updated 2026-10-12
Weakness: CWE-77

Description

A vulnerability was detected in sworddut mcp-ffmpeg-helper 0.1.0/0.1.1/0.2.1. This affects the function handleToolCall of the file src/tools/handlers.ts of the component Tool Handler. The manipulation of the argument format results in os command injection. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

sworddut mcp-ffmpeg-helper: 0.1.0, 0.1.1, 0.2.1

References

https://github.com/sworddut/mcp-ffmpeg-helper/
https://github.com/sworddut/mcp-ffmpeg-helper/issues/6
https://vuldb.com/cve/CVE-2026-78430
https://vuldb.com/submit/886393
https://vuldb.com/vuln/394711
https://vuldb.com/vuln/394711/cti
https://vuldb.com/submit/886393

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