{"cve":"CVE-2014-3577","nvd":{"published":"2014-08-21T14:55:05.100","modified":"2026-06-17T00:08:32.790","status":"Modified","description":"org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and HttpAsyncClient before 4.0.2 does not properly 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 a \"CN=\" string in a field in the distinguished name (DN) of a certificate, as demonstrated by the \"foo,CN=www.apache.org\" string in the O field.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00032.html","http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00033.html","http://packetstormsecurity.com/files/127913/Apache-HttpComponents-Man-In-The-Middle.html","http://rhn.redhat.com/errata/RHSA-2014-1146.html","http://rhn.redhat.com/errata/RHSA-2014-1166.html"],"products":["apache:httpasyncclient","apache:httpclient"],"source":"nvd","synced_at":"2026-10-19T20:33:06.232976534+00:00"},"epss":{"cve":"CVE-2014-3577","score":0.09189,"percentile":0.95332,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cfh5-3ghh-wfjx","url":"https://osv.dev/vulnerability/GHSA-cfh5-3ghh-wfjx","summary":"Improper Verification of Cryptographic Signature in org.apache.httpcomponents:httpclient","modified":"2024-12-03T06:09:02.246830Z","packages":[{"ecosystem":"Maven","name":"org.apache.httpcomponents:httpclient","purl":"pkg:maven/org.apache.httpcomponents/httpclient","ranges":["<4.3.5"],"fixed":["4.3.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}