Vulnerability · Published Sep 10, 2026 · Assigned by VulnCheck

CVE-2026-73694FileRun < 2026.3.0 OS Command Injection via escapeshellcmd() No-Op Redefinition

High 7.2

In plain English

A high-severity OS command injection in FileRun from FileRun. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)2.2%top 17.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FileRun before 2026.3.0 contains an OS command injection vulnerability caused by a no-op redefinition of escapeshellcmd() in CLI.php that strips shell-metacharacter escaping, allowing attacker-controlled input to reach an exec() sink unsanitized. Attackers can exploit this through an interactive path via image_preview.php with a crafted args parameter requiring superuser authentication, or through a persistent path by storing malicious payloads in thumbnails_ffmpeg_args or thumbnails_ffmpeg_ss that execute when any user triggers video thumbnail generation.

Affected products (as reported)

Vendor	Product	Versions
FileRun	FileRun	0 – before 2026.3.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

VulnCheck Blog technical-description, exploit
Release Notes release-notes, patch
https://www.vulncheck.com/advisories/filerun-os-command-injection-via-escapeshellcmd-no-op-redefinition third-party-advisory