SSRF in Fluent Fluentd
CVE-2026-44161
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, the Fluentd out_http output plugin allows placeholders such as ${tag} in the endpoint configuration pa…
Vulnerability class: SSRF (Server-Side Request Forgery)
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L.
Affected products
- Fluent Fluentd — versions < 1.19.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-44161?
- CVE-2026-44161 is a high-severity vulnerability in Fluent Fluentd, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2026-07-08.
- How severe is CVE-2026-44161?
- High severity. CVSS v3 base score is 7.2 out of 10.