{"cve":"CVE-2020-13955","nvd":{"published":"2020-10-09T13:15:11.083","modified":"2026-06-17T02:53:59.570","status":"Modified","description":"HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-295"],"references":["https://lists.apache.org/thread.html/r0b0fbe2038388175951ce1028182d980f9e9a7328be13d52dab70bb3%40%3Cdev.calcite.apache.org%3E","https://lists.apache.org/thread.html/r0b0fbe2038388175951ce1028182d980f9e9a7328be13d52dab70bb3%40%3Cdev.calcite.apache.org%3E"],"products":["apache:calcite"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-13955","score":0.02149,"percentile":0.82119,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-hxp5-8pgq-mgv9","url":"https://osv.dev/vulnerability/GHSA-hxp5-8pgq-mgv9","summary":"Missing Authentication for Critical Function in Apache Calcite","modified":"2023-11-08T04:02:24.261790Z","packages":[{"ecosystem":"Maven","name":"org.apache.calcite:calcite-core","purl":"pkg:maven/org.apache.calcite/calcite-core","ranges":["<1.26.0"],"fixed":["1.26.0"]},{"ecosystem":"Maven","name":"org.apache.calcite:calcite-druid","purl":"pkg:maven/org.apache.calcite/calcite-druid","ranges":["<1.26.0"],"fixed":["1.26.0"]},{"ecosystem":"Maven","name":"org.apache.calcite:calcite-splunk","purl":"pkg:maven/org.apache.calcite/calcite-splunk","ranges":["<1.26.0"],"fixed":["1.26.0"]}]}],"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."]}