#VU116003 Deserialization of Untrusted Data in Fluentd - CVE-2022-39379

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Main Vulnerability Database Vulnerabilities #VU116003

#VU116003 Deserialization of Untrusted Data in Fluentd - CVE-2022-39379

Published: September 22, 2025


Vulnerability identifier: #VU116003
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-39379
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Fluentd
Software vendor:
Fluentd Project

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data if the environment variable "FLUENT_OJ_OPTION_MODE" is explicitly set to "object". A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.


Remediation

Install updates from vendor's website.

External links