BIT-FLUENTD-2026-44161 Fluentd: Server-Side Request Forgery (SSRF) via Placeholder Expansion in `out_http`

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 outhttp output plugin allows placeholders such as $tag in the endpoint configuration parameter, and if a placeholder value is derived from untrusted...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the outhttp process when untrusted user input is used in the endpoint configuration parameter. An attacker can cause the system to send HTTP requests to arbitrary internal services by manipulating...

PT-2026-53005

Name of the Vulnerable Software and Affected Versions Fluentd versions prior to 1.19.3 Description The out http output plugin allows the use of placeholders, such as $tag, in the endpoint configuration parameter. If a placeholder value is derived from untrusted input, an attacker can control the...