{"id":"AZL-11396","summary":"CVE-2022-39379 affecting package rubygem-fluentd for versions less than 1.14.6-2","details":"Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. A remote code execution (RCE) vulnerability in non-default configurations of Fluentd allows unauthenticated attackers to execute arbitrary code via specially crafted JSON payloads. Fluentd setups are only affected if the environment variable `FLUENT_OJ_OPTION_MODE` is explicitly set to `object`. Please note: The option FLUENT_OJ_OPTION_MODE was introduced in Fluentd version 1.13.2. Earlier versions of Fluentd are not affected by this vulnerability. This issue was patched in version 1.15.3. As a workaround do not use `FLUENT_OJ_OPTION_MODE=object`.","modified":"2026-04-21T04:22:06.080405Z","published":"2022-11-02T13:15:13Z","upstream":["CVE-2022-39379"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39379"}],"affected":[{"package":{"name":"rubygem-fluentd","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/rubygem-fluentd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.6-2"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-11396.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}