{"schemaVersion":3,"id":"CVE-2018-1999043","aliases":["GHSA-2632-h32j-6rg9"],"status":"published","duplicateOf":null,"title":null,"description":"A denial of service vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in BasicAuthenticationFilter.java, BasicHeaderApiTokenAuthenticator.java that allows attackers to create ephemeral in-memory user records by attempting to log in using invalid credentials.","dates":{"published":"2018-08-23T18:00:00.000Z","modified":"2024-09-16T18:03:50.826Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Maven","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true}]},"epss":{"probability":0.01673,"percentile":0.765,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01673},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01631,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01673,"percentile":0.765}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01631,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01673,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01673,"percentile":0.765}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-772","name":"Missing Release of Resource after Effective Lifetime","description":"The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/772.html"}],"affected":[{"vendor":"jenkins","product":"jenkins","name":"Jenkins","label":"jenkins","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.121.2","noFixRecorded":false,"fixedIn":null},{"text":"≤ 2.137","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.121.2 | ≤ 2.137","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"jenkins","label":"Jenkins","category":"server-app"}},"hubHref":"/vendor/jenkins/jenkins"},{"vendor":"org.jenkins-ci.main","product":"jenkins-core","name":"org.jenkins-ci.main:jenkins-core","label":"jenkins-core","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","purlType":"maven","versions":[{"text":"< 2.121.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.122, < 2.138","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.121.3 | ≥ 2.122, < 2.138","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://jenkins.io/security/advisory/2018-08-15/#SECURITY-672","label":"jenkins.io/security/advisory/2018-08-15/","hostname":"jenkins.io","tags":["X Refsource CONFIRM","Vendor Advisory","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1999043","label":"nvd.nist.gov/vuln/detail/CVE-2018-1999043","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/jenkinsci/jenkins","label":"github.com/jenkinsci/jenkins","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["RHBA-2018:3743"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-08-23T18:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T18:03:50.826Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:07:46.075Z","stale":false,"partial":false}}