Stills before 25.24.2 OS Command Injection via Media File Names

Summary

Stills before 25.24.2 contains an OS command injection vulnerability that allows attackers to execute shell commands by supplying crafted media file paths. Attackers can name a media file with $(...) or backticks to execute operating system commands with Node.js process privileges when ffmpeg, ffprobe, gifsicle, or convert runs.

Evidence

The maintainer accepted the patch submitted with the report and merged the fix.

Remediation

Upgrade stills to 25.24.2 or later.

References

• VulnCheck advisoryhttps://www.vulncheck.com/advisories/stills-before-25.24.2-os-command-injection-via-media-file-names
• Fix pull requesthttps://github.com/shahkashani/stills/pull/29
• Fix pull requesthttps://github.com/shahkashani/stills/pull/30
• Vulnerable codehttps://github.com/shahkashani/stills/blob/66d5def1265b817d84524473a2813e4781dcbd80/lib/stills/frames.js#L106-L108
• Vulnerable codehttps://github.com/shahkashani/stills/blob/66d5def1265b817d84524473a2813e4781dcbd80/lib/content/video.js#L58-L60
• CVE recordhttps://www.cve.org/CVERecord?id=CVE-2026-110649