Symfony 4.3 end of life (EOL) date and support status
End of life End of life since 2020-07-01 (2290 days ago)
Upgrade: Symfony 4.3 no longer receives fixes. Supported cycles: 8.1, 7.4, 6.4, 5.4.
| Product | Symfony |
|---|---|
| Version cycle | 4.3 |
| Status | End of life |
| Released | 2019-05-30 |
| Active support until | 2020-01-01 |
| End of life | 2020-07-01 |
| Latest version | 4.3.11 (2020-01-31) |
| Last verified | 2026-10-08 |
All Symfony versions → · Source: endoflife.date
Frequently asked questions
Is Symfony 4.3 end of life?
Yes. End of life since 2020-07-01 (2290 days ago). It no longer receives security or bug fixes.
When does Symfony 4.3 reach end of life?
Symfony 4.3 reached end of life on 2020-07-01.
When was Symfony 4.3 released?
Symfony 4.3 was first released on 2019-05-30.
What is the latest Symfony 4.3 version?
The latest 4.3 release is 4.3.11, published on 2020-01-31.
Give your AI agent these facts
Vigia is a free MCP server: your coding agent checks versions, breaking changes and vulnerabilities before it writes code. No signup, no API key.
claude mcp add --transport http vigia https://vigia.coredls.cloud/mcp
Add to CursorAdd to VS Code★ Star on GitHub
Any other MCP client
{ "mcpServers": { "vigia": { "url": "https://vigia.coredls.cloud/mcp" } } }Agent skill (SKILL.md): tells the agent when to use Vigia · GitHub Action for pull requests
For agents
GET https://vigia.coredls.cloud/v1/eol/symfony/4.3