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Fluent Bit v5.1.5

October 29, 2026

New features

Improvements and enhancements

  • Fluent Bit is upgraded to version 5.1.5. For more details, refer to the Fluent Bit announcements.
  • This release includes New Relic Fluent Bit Output Plugin 3.12.0.
  • The infrastructure agent recommends Fluent Bit 5.1.5 packages for Linux and Windows.
  • The Fluent Bit Output Plugin Docker image for Linux uses Fluent Bit 5.1.5 with output plugin 3.12.0. The Windows image variants include output plugin 3.12.0 and keep their existing Fluent Bit versions: 5.1.2 for Windows Server 2022 and 2025, and 4.0.3 for Windows Server 2019.
  • The New Relic Logging Helm chart is bumped to version 1.44.0 and installs the new plugin image.
  • Debian 11 (Bullseye) packages are no longer built because the distribution reached end of life.

Security updates

  • The Go version is upgraded to 1.27.3 for CVE fixes, including blocking the compromised eMudhra intermediate CA keys.
  • The Linux Docker image no longer trusts the emSign ECC Root CA - G3 and AAA Certificate Services root certificates.

Notes

To stay up to date with the most recent fixes and enhancements, subscribe to our Logs RSS feed.

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