What’s Vulnerable › Vulnerabilities

CVE-2026-73699: FileRun < 2026.3.0 PHP Object Injection via Perms::getPerms()

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% 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-502

Description

FileRun before 2026.3.0 contains a PHP object injection vulnerability that allows authenticated attackers to execute arbitrary code by exploiting incorrect options passed to unserialize() in the Perms::getPerms() method, where a positional array is used instead of the required named-key array to disable class instantiation. Attackers with database write access can inject a serialized gadget chain into the permissions table columns processed on every authenticated page load to write arbitrary files, such as PHP webshells, to web-accessible paths.

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-php-object-injection-via-perms-getperms

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