{"cve":"CVE-2020-13956","nvd":{"published":"2020-12-02T17:15:14.547","modified":"2026-10-08T19:16:54.573","status":"Modified","description":"Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-20"],"references":["https://lists.apache.org/thread.html/r03bbc318c81be21f5c8a9b85e34f2ecc741aa804a8e43b0ef2c37749%40%3Cissues.maven.apache.org%3E","https://lists.apache.org/thread.html/r043a75acdeb52b15dd5e9524cdadef4202e6a5228644206acf9363f9%40%3Cdev.hive.apache.org%3E","https://lists.apache.org/thread.html/r06cf3ca5c8ceb94b39cd24a73d4e96153b485a7dac88444dd876accb%40%3Cissues.drill.apache.org%3E","https://lists.apache.org/thread.html/r0a75b8f0f72f3e18442dc56d33f3827b905f2fe5b7ba48997436f5d1%40%3Cissues.solr.apache.org%3E","https://lists.apache.org/thread.html/r0bebe6f9808ac7bdf572873b4fa96a29c6398c90dab29f131f3ebffe%40%3Cissues.solr.apache.org%3E"],"products":["apache:httpclient","netapp:active_iq_unified_manager","netapp:snapcenter","oracle:commerce_guided_search","oracle:communications_cloud_native_core_service_communication_proxy","oracle:data_integrator","oracle:jd_edwards_enterpriseone_orchestrator","oracle:jd_edwards_enterpriseone_tools","oracle:nosql_database","oracle:peoplesoft_enterprise_peopletools","oracle:peoplesoft_enterprise_pt_peopletools","oracle:primavera_unifier","oracle:retail_customer_management_and_segmentation_foundation","oracle:spatial_studio","oracle:sql_developer","oracle:weblogic_server","quarkus:quarkus"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-13956","score":0.09032,"percentile":0.95244,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-7r82-7xv7-xcpj","url":"https://osv.dev/vulnerability/GHSA-7r82-7xv7-xcpj","summary":"Cross-site scripting in Apache HttpClient","modified":"2026-09-10T03:49:05.835118505Z","packages":[{"ecosystem":"Maven","name":"org.apache.httpcomponents:httpclient","purl":"pkg:maven/org.apache.httpcomponents/httpclient","ranges":["<4.5.13"],"fixed":["4.5.13"]},{"ecosystem":"Maven","name":"org.apache.httpcomponents:httpclient","purl":"pkg:maven/org.apache.httpcomponents/httpclient","ranges":[">=5.0.0 <5.0.3"],"fixed":["5.0.3"]}]}],"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."]}