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
Source GCVE Database
Not known to be exploited · CVSS 8.8 High.
Data as of 11 Nov 2026, 23:24 UTC
- EPSS
- 2.5% chance of exploitation in 30 days – higher than 85% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.
What to do
AI-suggested
Until a fix is available, restrict file upload permissions to trusted users only and consider disabling thumbnail generation or sanitizing filenames manually before processing. Monitor vendor channels for official patches or updates addressing this 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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-14863 (opens in a new tab)
- filerun.com (opens in a new tab)
- filerun.com/index.php/changelog?v=2026.2.1 (opens in a new tab)
- vulncheck.com/advisories/filerun-rce-via-thumbnail-generation-command-injection (opens in a new tab)
- vulncheck.com/blog/filerun-thumbnail-command-injection-rce (opens in a new tab)