What’s Vulnerable › Vulnerabilities

CVE-2026-73693: FileRun < 2026.3.0 OS Command Injection via PhotoProofSheet Handler

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-10 · updated 2026-09-10
• Weakness: CWE-78

Description

FileRun before 2026.3.0 contains an OS command injection vulnerability in the PhotoProofSheet handler that allows authenticated users with upload permission to execute arbitrary commands by uploading files with shell metacharacters in their names. Attackers can upload a file containing command substitution syntax such as backticks, semicolons, or $() sequences in the filename, then trigger the PhotoProofSheet endpoint to execute arbitrary commands as the web-server user due to missing escapeshellarg() sanitization in the ImageMagick montage command construction.

Affected products

• FileRun: before 2026.3.0 — fixed in 2026.3.0

How to fix

Upgrade to a fixed version: FileRun 2026.3.0. Check the vendor advisory for mitigations.

References

• https://filerun.com/index.php/changelog?v=2026.3.0
• https://vulncheck.com/blog/filerun-delegated-admin-sql-to-object-injection-rce
• https://www.vulncheck.com/advisories/filerun-os-command-injection-via-photoproofsheet-handler

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