# CVE-2026-73699

## Summary

- **CVE ID:** CVE-2026-73699
- **Severity:** HIGH
- **CVSS Score:** 8.6 (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)
- **CWE:** CWE-502
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## 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 — FileRun (0)

## References

- [CNA](https://vulncheck.com/blog/filerun-delegated-admin-sql-to-object-injection-rce)
- [CNA](https://filerun.com/index.php/changelog?v=2026.3.0)
- [CNA](https://www.vulncheck.com/advisories/filerun-php-object-injection-via-perms-getperms)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._