fluentd vulnerable to remote code execution due to insecure deserialization (in non-default configuration)

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.45, the 98th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 2 Nov 2022. New records show when each source confirmed them.

Sources

• GitHub Advisory Database: GHSA-fppq-mj76-fpj2
• OSV: GHSA-fppq-mj76-fpj2
• github.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2
• nvd.nist.gov/vuln/detail/CVE-2022-39379
• github.com/fluent/fluentd/commit/48e5b85dab1b6d4c273090d538fc11b3f2fd8135
• github.com/fluent/fluentd
• github.com/rubysec/ruby-advisory-db/blob/master/gems/fluentd/CVE-2022-39379.yml
• lists.fedoraproject.org/archives/list/[email protected]/message/MYD5QV66OLDHES6IKVYYM3Y3YID3VVCO

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.