CVE-2013-4366

critical Apache
CVSS v3 Base Score
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.3%
Exploitation probability in 30 days
Top 20% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: October 30, 2017 (3118 days ago)
Last Modified: May 13, 2026
Vendor: Apache
Source: NVD

Description

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.

CWE

CWE-20

Affected Products

apache httpclient

References

🔗 svn.apache.org 🔗 www.apache.org 🔗 svn.apache.org 🔗 www.apache.org