{"id":"CVE-2019-0197","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-0197","generatedAt":"2026-10-29T00:34:34.888Z","title":"A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38.","description":"A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set \"H2Upgrade on\" are unaffected by this issue.","published":"2019-06-11T22:29:04.000Z","lastModified":"2026-06-17T02:07:56.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L"},"cwe":["CWE-444"],"affected":["apache/http server","canonical/ubuntu linux","fedoraproject/fedora","opensuse/leap","redhat/jboss core services","oracle/communications session report manager","oracle/communications session route manager","oracle/enterprise manager ops center","oracle/http server","oracle/instantis enterprisetrack","oracle/retail xstore point of service"],"epss":{"score":0.08588,"percentile":0.95051,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (8.59%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html","tags":["Mailing List","Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html","tags":["Mailing List","Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html","tags":["Mailing List","Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2019/04/02/2","tags":["Mailing List","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/107665","tags":["Third Party Advisory","VDB Entry"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3932","tags":["Third Party 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Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.f5.com/csp/article/K44591505","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03950en_us","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4113-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-0197","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}