CVE-2013-4366
9.8
CRITICAL · CVSS 3.1 · EPSS 3.3% (pctl 88)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.31% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2017-10-30 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| apache | httpclient |
References
→ the Explorer · watch your stack · NVD