Apache Commons HttpClient 3.x, as used in Amazon Flexible Payments Service (FPS) merchant Java SDK and other products, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| commons-httpclient:commons-httpclient(Maven) | 3.0 | N/A | N/A |
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