Vulnerability details

CVE-2026-73694

FileRun FileRun

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

CVSS 4.0

8.6High

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.

CVSS scores

Score	Version	Source	Vector
8.6High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
7.2High	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
FileRun	FileRun	v < 2026.3.0	CVEProject cvelistV5 (CNA)

References and advisories

https://vulncheck.com/blog/filerun-delegated-admin-sql-to-object-injection-rce technical-descriptionexploit
https://filerun.com/index.php/changelog?v=2026.3.0 release-notespatch
https://www.vulncheck.com/advisories/filerun-os-command-injection-via-escapeshellcmd-no-op-redefinition third-party-advisory

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Details

Published: 2026-09-10
Last updated: 2026-10-01
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

2.23%

Probability of exploitation in 30 days

82.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')