Apache Solr End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all Apache Solr versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 1 | 1.4.1 | Dec 22, 2006 | No EOL date | Supported | Active |
| 3 | 3.6.2 | Mar 30, 2011 | No EOL date | Supported | Active |
| 4 | 4.10.4 | Oct 11, 2012 | No EOL date | Supported | Active |
| 5 | 5.5.5 | Feb 19, 2015 | Oct 24, 2017 | 3164 days past EOL | EOL |
| 6 | 6.6.6 | Apr 7, 2016 | Mar 13, 2019 | 2659 days past EOL | EOL |
| 7 | 7.7.3 | Sep 18, 2017 | May 11, 2022 | 1504 days past EOL | EOL |
| 8 | 8.11.4 | Mar 13, 2019 | Oct 25, 2024 | 606 days past EOL | EOL |
| 9 | 9.10.1 | May 11, 2022 | TBD | Supported | Active |
| 10 | 10.0.0 | Mar 3, 2026 | TBD | Supported | Active |
What does Apache Solr end of life mean for your organization?
When a version of Apache Solr 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: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL Apache Solr 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.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL Apache Solr versions. This is a bridge, not a permanent solution — plan your migration in parallel.
We work with vetted extended support vendors. Tell us what you need and we'll connect you with the right provider.
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