CVE-2026-73699
FileRun < 2026.3.0 PHP Object Injection via Perms::getPerms()
- State
- Published
- Severity
- 8.6 High
- Published
- Sep 10, 2026
- Updated
- Oct 1, 2026
- Reserved
- Aug 13, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | 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 | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
FileRunFileRun |
|
References
- VulnCheck Blogtechnical-descriptionexploit
- Release Notesrelease-notespatch
- https://www.vulncheck.com/advisories/filerun-php-object-injection-via-perms-getpermsthird-party-advisory
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