Ruby 1.9.3 End of Life
Support dates, vulnerabilities published since end of life, and upgrade guidance — rebuilt from live data.
Ruby 1.9.3 reached end of life on 23 Feb 2015. It no longer receives security fixes.
Support timeline
Official dates from the Ruby release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 30 Oct 2011 | — |
| End of life | 23 Feb 2015 | 11.5 years ago |
| Latest release | 1.9.3p551 · 13 Nov 2014 | final |
The cost of staying: CVEs since end of life
55 Ruby vulnerabilities have been published since 23 Feb 2015. All were fixed in supported branches — 1.9.3 received none of them. Source: NVD.
Ruby CVEs published since 1.9.3's EOL, by year
14 of the 55 are rated critical · data refreshed 2026-08-09
Published 6 Jan 2017 · rated critical — fixed in supported branches only, never in 1.9.3. Details
Published 6 Jan 2017 · rated critical — fixed in supported branches only, never in 1.9.3. Details
Published 6 Jan 2017 · rated critical — fixed in supported branches only, never in 1.9.3. Details
Where to go from 1.9.3
Recommended target: Ruby 4.0 (supported until 31 Mar 2029).
The newest actively supported branch is Ruby 4.0 (latest release 4.0.6). Review ruby-lang.org before upgrading.
Frequently asked questions
Is Ruby 1.9.3 still safe to use?
No. Ruby 1.9.3 stopped receiving security fixes on 23 Feb 2015. Since then, 55 Ruby vulnerabilities have been published and fixed in supported branches — Ruby 1.9.3 received none of those fixes.
Can I still download Ruby 1.9.3?
Yes — the final release (1.9.3p551) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Ruby 1.9.3 to?
Upgrade to Ruby 4.0, the newest actively supported branch (supported until 31 Mar 2029).