{"cve":"CVE-2018-14642","nvd":{"published":"2018-09-18T13:29:00.970","modified":"2026-06-17T01:41:21.360","status":"Modified","description":"An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-200"],"references":["https://access.redhat.com/errata/RHSA-2019:0362","https://access.redhat.com/errata/RHSA-2019:0364","https://access.redhat.com/errata/RHSA-2019:0365","https://access.redhat.com/errata/RHSA-2019:0380","https://access.redhat.com/errata/RHSA-2019:1106"],"products":["redhat:jboss_enterprise_application_platform","redhat:undertow"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-14642","score":0.02114,"percentile":0.81824,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vf6r-mmhc-3xcm","url":"https://osv.dev/vulnerability/GHSA-vf6r-mmhc-3xcm","summary":"Exposure of Sensitive Information to an Unauthorized Actor in Undertow","modified":"2023-11-08T03:59:56.134774Z","packages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","ranges":["<2.0.19.FINAL"],"fixed":["2.0.19.FINAL"]}]}],"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."]}