Hostname verification in Apache HttpClient 4.3 was disabled by default
http/impl/client/HttpClientBuilder.java in Apache HttpClient 4.3.x before 4.3.1 does not ensure that X509HostnameVerifier is not null, which allows attackers to have unspecified impact via vectors involving hostname verification.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.httpcomponents:httpclient | >= 4.3, < 4.3.1 | 4.3.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-20- Platform
- Java / Kotlin (Maven)
- Package
org.apache.httpcomponents:httpclient- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-pqwh-44jj-p5rm - CC BY 4.0
Vulnerability history: org.apache.httpcomponents:httpclient
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 10.2018 05.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
- Medium 4
Disclosures per year
- 2018: 3
- 2019: 0
- 2020: 0
- 2021: 1
- 2022: 2
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Hostname verification in Apache HttpClient 4.3 was disabled by default this entry
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