Fluent Bit End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all Fluent Bit versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
Fluent Bit 5.1 is supported, with no end-of-life or end-of-support date announced yet. The next Fluent Bit version to reach end of life is 5.0, on November 6, 2026. 24 of 26 tracked Fluent Bit versions are past end of life; the most recent to reach it, 4.2, did so on June 30, 2026. The full Fluent Bit lifecycle, with every version's release and end-of-support date, is in the table below.
Running an EOL version? Get matched with support options — free ↓| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 0.10 | 0.10.1 | Dec 30, 2016 | Not published | Past EOL | EOL |
| 0.11 | 0.11.17 | Mar 30, 2017 | Not published | Past EOL | EOL |
| 0.12 | 0.12.19 | Aug 17, 2017 | Not published | Past EOL | EOL |
| 0.13 | 0.13.8 | Aug 18, 2018 | Not published | Past EOL | EOL |
| 0.14 | 0.14.9 | Aug 29, 2018 | Not published | Past EOL | EOL |
| 1.0 | 1.0.6 | Dec 13, 2018 | Not published | Past EOL | EOL |
| 1.1 | 1.1.3 | May 8, 2019 | Not published | Past EOL | EOL |
| 1.2 | 1.2.2 | Jun 26, 2019 | Not published | Past EOL | EOL |
| 1.3 | 1.3.11 | Sep 30, 2019 | Not published | Past EOL | EOL |
| 1.4 | 1.4.6 | Mar 25, 2020 | Not published | Past EOL | EOL |
| 1.5 | 1.5.7 | Jul 13, 2020 | Not published | Past EOL | EOL |
| 1.6 | 1.6.10 | Oct 8, 2020 | Not published | Past EOL | EOL |
| 1.7 | 1.7.9 | Feb 14, 2021 | Not published | Past EOL | EOL |
| 1.8 | 1.8.15 | Jul 7, 2021 | Dec 5, 2022 | 1388 days past EOL | EOL |
| 1.9 | 1.9.10 | Mar 11, 2022 | Dec 5, 2022 | 1388 days past EOL | EOL |
| 2.0 | 2.0.14 | Oct 25, 2022 | Jul 19, 2023 | 1162 days past EOL | EOL |
| 2.1 | 2.1.10 | Apr 18, 2023 | Feb 6, 2024 | 960 days past EOL | EOL |
| 2.2 | 2.2.3 | Nov 6, 2023 | Jun 21, 2024 | 824 days past EOL | EOL |
| 3.0 | 3.0.7 | Mar 21, 2024 | Oct 8, 2024 | 715 days past EOL | EOL |
| 3.1 | 3.1.10 | Jul 8, 2024 | Feb 12, 2025 | 588 days past EOL | EOL |
| 3.2 | 3.2.10 | Nov 12, 2024 | Jun 29, 2025 | 451 days past EOL | EOL |
| 4.0 | 4.0.14 | Mar 29, 2025 | Dec 24, 2025 | 273 days past EOL | EOL |
| 4.1 | 4.1.2 | Sep 24, 2025 | Feb 11, 2026 | 224 days past EOL | EOL |
| 4.2 | 4.2.8 | Nov 11, 2025 | Jun 30, 2026 | 85 days past EOL | EOL |
| 5.0 | 5.0.10 | Mar 31, 2026 | Nov 6, 2026 | 44 days remaining | Warning |
| 5.1 | 5.1.2 | Aug 6, 2026 | TBD | Supported | Active |
Live EOL badge for your README — updates automatically at every build.
[](https://endoflife.ai/fluent-bit)
Fluent Bit release and support pattern
Across the 26 release lines with a published release date, Fluent Bit has shipped a new line roughly every 4 months (median interval). A line typically stays supported for about 8 months from its release to its end-of-life date (measured on the 12 lines with both dates published).
Of the 26 release lines tracked, 24 are past end of life and 2 are still within support; 13 are marked end of life without a published date. The newest line, 5.1, was released August 6, 2026. The next scheduled end of life is 5.0 on November 6, 2026 — 43 days from this build.
Computed from the tracked release data at every build — the figures above are the dates in the table, restated, not an editorial estimate.
What does Fluent Bit end of life mean for your organization?
When a version of Fluent Bit reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: A CVE-based scan does not show the accumulation of unpatched vulnerabilities in EOL software. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no vendor patch is coming. This is one of the most dangerous gaps in enterprise security posture.
Organizations running EOL Fluent Bit should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Your options when Fluent Bit reaches end of life
There are four realistic paths. Which one is right depends far more on how long the system needs to keep running than on the version you are on today.
| Option | Best when | Watch out for |
|---|---|---|
| Move to a supported version | The system will outlive the current version's support window and you can schedule the work | Budget for compatibility testing, not just the upgrade itself — that is where the real cost sits |
| Replace the component | The project is unmaintained, or a better-supported alternative exists | The replacement has its own lifecycle and its own end-of-life date — you are changing vendors, not escaping the problem |
| Buy extended support | Migration is genuinely underway but cannot finish before the deadline, or the workload is frozen by certification or a third-party application | A bridge, not a destination — every year purchased is a year the migration still has to happen |
| Document accepted risk | The system is isolated, short-lived, or scheduled for retirement | Only defensible with real compensating controls and a written decision — auditors treat undocumented end-of-life software as a finding |
How to choose, in one question: how many more years does this system need to run? Under a year, extended support (where it exists) is usually cheaper than an emergency migration. One to three years, migrate — support purchased repeatedly costs more than doing the project once, and the project only gets harder as the version ages. Indefinitely, migrate now and plan the next migration before it surprises you.
Worth saying plainly, because vendors selling extended support rarely will: extended support is often the more expensive choice over a multi-year horizon. It is the right answer when a deadline is genuinely unreachable, not as a default. Compare the annual fee against the one-time cost of migrating before committing to either.
Formalizing decisions like this across your estate? Our free EOL policy template is a ready-to-adopt policy with risk tiers, remediation SLAs, and audit mapping — no signup, free to use and share.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL Fluent Bit versions. This is a bridge, not a permanent solution — plan your migration in parallel.
Fluent Bit has 24 versions past end of life — security patches have stopped, but CVE disclosures haven't. Extended support past the official date exists for many products in this position — whether it exists for Fluent Bit is exactly what we check. Tell us where to reach you and we'll reply with matched options and pricing guidance — or an honest "no vendor covers this."