Vulnerability Description
FileRun up to and including version 2026.2.0 contains an OS command injection vulnerability that allows authenticated attackers to achieve remote code execution by uploading a file with a malicious filename containing shell command substitution sequences. The thumbnail generation system passes filenames wrapped in shell double-quotes directly to exec() without escapeshellarg() sanitization, allowing filenames such as $(PAYLOAD).mp4 to survive the filename sanitizer and be evaluated as shell commands when ffmpeg, ImageMagick, vips, or stl-thumb processes the file during thumbnail generation.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://filerun.com/
- https://filerun.com/index.php/changelog?v=2026.2.1
- https://www.vulncheck.com/advisories/filerun-rce-via-thumbnail-generation-comman
- https://www.vulncheck.com/blog/filerun-thumbnail-command-injection-rce
FAQ
What is CVE-2026-14863?
CVE-2026-14863 is a vulnerability with a CVSS score of 8.8 (HIGH). FileRun up to and including version 2026.2.0 contains an OS command injection vulnerability that allows authenticated attackers to achieve remote code execution by uploading a file with a malicious fi...
How severe is CVE-2026-14863?
CVE-2026-14863 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-14863?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.